Customers suck

I hate how low people are. They yell at someone working the register because they know the worker wont bother to do anything. Customers can be shitheads.
Do they talk to everyone like that everyday? I dont care if youre having a really bad day. Who doesnt have one? Man, a lot of the times I really wish we can get rid off all the stupid shitty people out there. Theyre not contributing crap, just making the world worse than it was before.