I don't get bullied myself, but I have been and I know what it feels like.
I live in an area where most people have money to throw around. There are cliques, many in fact. It's almost like Mean Girls. The popular students exploit others for their personal gain. There is a slightly mentally handicapped boy in a few of my classes. Sadly, there is also quite a few bullies. They take him and make fun of him to his face because he doesn't know what they are doing. But there's nothing anyone can do about it. They don't straight up mock him, my school is very strongly anti-bully. They are sneakier than that. It's a lot more of the "oh my god he's my best friend (not!)" bulling. They act so sickly sweet to him but nobody realizes the moment he turns his back they mock him for being different. I am so sick of watching things like this happen. I've reported it so many times but when teachers come in to observe they can't see through the initial "kindness" they seem to put off.