General question about the possibility of objective moral truth

[Chad32]

Hello to everyone

I have a general question about moral: The discussion between religious people and atheists often turns around the question if someone needs to be believer in order to follow moral rules.
In my opinion an atheist can be as much a person of high moral standards as a religious person (and some atheists can even have a higher moral standard than some religious people). Just to say that right at the beginning.

Now I would like to ask: Is from an atheistic point of view a moral conviction like "killing of people is morally wrong" an objective fact? Or is it a social convention, which means it is a subjective view?

Thanks for any answers!

Didn't read anyone elses answers but...............

There is no atheistic point of view about moral convictions, "killing of people" isn't an objective fact  and it's very rare for it to be socially conventional, it is subjective though.

 Additionally I doubt that Christians believe killing people is morally wrong because that would make the God of the bible one of the most morally wrong beings to ever exist.

There is an irony in the fact that a christian pastor, believing he is morally superior, will call for the deaths of all homosexuals, because the idea of concenting adults having same sex relations repulses him. Though he also buys into the propaganda that AIDS is caused by gays.