@braydenvaness,
I've seen plenty of atheists with strong morals, so it is definitely possible.
I've also noticed that whenever I hear of a grievous atrocity, it almost always seems to be committed by an atheist. Clearly while some atheists do have strong morals, other atheists do not.
I'd guess that there are religious people who also have no personal qualms about committing atrocities, but they refrain from doing so because they fear God's judgement.