ISIS is to Islam as the KKK is to Christianity

[WinterHold]

So then the Muslims weren't justified in killing the Meccans unless the Meccans had killed Muslims.  Do you have any examples of the Meccans killing Muslims prior to the caravan raids?  By the way, you've just given the Meccans justification for killing Muhammad and Muslims as they were "spreading corruption in the land" by mocking the gods and traditions of the pagans.  Retaliating against a justified killing, regardless, would then not be self defense but rather simple murder.

"And slay them wherever ye find them, and drive them out of the places whence they drove you out, for persecution is worse than slaughter."

per·se·cu·tion, noun

   hostility and ill-treatment, especially because of race or political or religious beliefs.

The Meccans did murder Muslims, here's a well documented name:

https://en.wikipedia.org/wiki/Persecutio...by_Meccans

Sumayyah bint Khabbab, and her husband Yasir were tortured to death by Abu Jahl.[1][2]

There are so many others too who aren't mentioned by wikipedia. But you can find a pretty good covering here:

https://www.al-islam.org/restatement-his...-and-their

Makkah was in a state of war!
The Quraysh opened the campaign against Islam by harassing and persecuting the Muslims. At the beginning, persecution was confined to jeers, jibes and insults. But as time went on, the infidels moved from the violence of words to the violence of deeds.
They refrained from inflicting physical injury upon Muhammad himself for fear of provoking reprisals; but they had no inhibitions in hurting the rank-and-file Muslims. For a long time, it were the latter who bore the brunt of the wrath of the Quraysh.
Ibn Ishaq
Then the Quraysh incited people against the companions of the Apostle who had become Muslims. Every tribe fell upon the Muslims among them, beating them and seducing them from their religion. God protected His Apostle from them through his uncle (Abu Talib), who, when he saw what Quraysh were doing, called upon Banu Hashim and Banu Al-Muttalib to stand with him in protecting the Apostle. This they agreed to do, with the exception of Abu Lahab.

some victims of persecution:

Some victims of persecution:
Bilal, the Ethiopian slave of Umayya bin Khalaf. Umayya and other infidels tortured him in the savage glare of the torrid sun of Makkah, and they tortured him beyond the limits of human endurance. But he was fortified by inner sources of strength and courage which never failed him. Love of God and the love of His Messenger made it possible for him to endure torture with cheer. Abu Bakr bought him from his master and set him free.

When the Apostle migrated to Medina, he appointed Bilal the first Muezzin of Islam. His rich and powerful voice rang through the air of Medina with the shout of Allah-o-Akbar (Great is the Lord). In later years, when the conquest of the peninsula was completed, the Apostle of God appointed Bilal his secretary of treasury.

Khabab ibn el-Arat was a young man of twenty when he accepted Islam. He was a client of Banu Zuhra. The Quraysh tortured him day after day. He migrated with the Prophet to Medina.
Suhaib bin Sinan had been captured and was sold as a slave by the Greeks. When he became a Muslim, the Quraysh beat him up savagely but could not shake his faith.

Abu Fukaiha was the slave of Safwan bin Umayya. He accepted Islam at the same time as Bilal. Like Bilal, he was also dragged by his master on hot sand with a rope tied to his feet. Abu Bakr bought him and emancipated him. He migrated to Medina with the Prophet but died before the battle of Badr.

Lubina was a female slave of Mumil bin Habib. Amin Dawidar writes in his book, Pictures From the Life of the Prophet (Cairo, Egypt, 1968), that Umar bin al-Khattab, the future khalifa of the Muslims, tortured her, and whenever he paused, he said: “I have not stopped beating you out of pity. I have stopped because I am exhausted.” He resumed beating her after he had rested. Abu Bakr bought her and set her free.

Zunayra was another female slave. When she declared her faith in Islam, Umar ibn al-Khattab, and Abu Jahl, took turns in torturing her until she became blind. Amin Dawidar states that many years later she recovered her sight, and the Quraysh attributed this recovery to the “sorcery” of Muhammad. Abu Bakr bought her and set her free.

Nahdiyya and Umm Unays were two other female slaves who became Muslims. Their masters tortured them for accepting Islam. Abu Bakr bought them and gave them their freedom.

There were some other Muslims who were not slaves but they were “poor and weak.” They too endured torture. Among them were Ammar ibn Yasir and his parents. Another member of this group was Abdullah ibn Masood, a young Muslim. He was distinguished among the companions of the Prophet by his knowledge and learning, and he was one of the earliest huffaz (men who knew Al-Qur’an al-Majid by heart) in Islam. As each new verse was revealed, he heard it from the Prophet and memorized it.

It is reported that whenSurah Rahman (the 55th chapter) was revealed, the Apostle of God asked his companions who among them would go into the Kaaba and read it before the infidels. Other companions hung back but Abdullah ibn Masood volunteered to go.
He went into the Kaaba and read the new chapter out aloud. Next to the Apostle himself, Abdullah ibn Masood was the first man to read Qur’an in the Kaaba before a hostile crowd of the infidels. The latter mauled him repeatedly but could not intimidate him into silence.

As for corruption, no, why does ISIS considered terrorist -in your logic- when it kills apostates, but Meccans aren't when they kill people who mock their God?

If I judge by your logic, terrorists have ever right to kill the innocent.