Insecurity can lead someone to kill?

People kill for all kinds of stupid reasons.

Yes I believe so. That and jealousy it’s been known to happen.

Both a mental disorder if a constant feeling of rejection and envy occurs 24/7.

Insecurity coupled with serious mental instability.

I guess but I'd call that more insanity

I don't think if people are that much crazy

The green eyed monster.

.......... I fucking hope not..

I suppose so