Humans kill anything that poses a threat to humans. Plenty of wild animals have had their populations decimated by this (bears, wolves, tigers, lions, etc).
And the much smaller populations that remain tend to be the less aggressive/less dangerous ones.
this is right but i think your perspective is off just a little
the bears, wolves, tigers and lions you listed are things that are still alive, humans probably got along with them more over the past 10-20,000 years than they did all the things they hunted to extinction. i think its rare to find a large animal, bigger than a small dog, that doesn't look cute in some way [to humans] when its not angry. this was their defense mechanism.
And the much smaller populations that remain tend to be the less aggressive/less dangerous ones.