It's a Star of David.
Why did you just call the Jewish people "demons"?
Maybe he's one of those Phelps Westboro Baptist Church whackos, they think everybody's going to hell. Now that I think about it, his style of argument is rather similar to theirs -- preach your point and never let logic or the facts get in your way.
More blasphemy from you, the Star of David has nothing to do with suicide despite your obviously warped beliefs.