Why is racism wrong?

[kılıç_mehmet]

Yeah, the basis of the foundation of the majority of the countries on earth are all dangerous. If not for them, Britain would still rule the Mid-east and most of Africa, along with India too!
Why? Because no one is really concerned about who their rulers are. Foreigners? Bah, they're just humans from another part of the earth, we're all brothers, so why really feel the need to rule ourselves? Colonists may have a monopoly on our salt, but who cares, we're all humans and should share, right.
Same, Americans, they come to take over our economy, let them. No need to favor our products over theirs, no need to protect our local produce over theirs, thats racist and outdated, we are afraid that they'll take over our economy and have us work as their thralls.

No mate, you're wrong. Nationalism is the way to freedom, nationalism is the way to total absolution of the different peoples of earth.
Nationalism revives folks out of their stupor of idleness and makes them work, makes them fight for a cause, makes them strive for greater heights, makes them create countries, makes them fight colonists and oppressors.
At the same time, it forces them to look up to themselves to find strength instead of others.
Any nation devoid of nationalist ideals is a nation bound to be dominated and enslaved.

You actually prove my point. Everything you describe is the result of nations/tribes trying to dominate other nations/tribes.

That wasn't your point though. A tribe will always feel the need to dominate another tribe, whether they have nationalist tendencies or not.
Animals do it, without giving much thought about it.
And humans have done so for hundreds of years. America does so without being nationalist in any way. International corporations do it.
Nationalists do what they do out of need. Internationalists do it out of greed.
That is the difference.