Why so much hate towards one kid?

I’ve only been on Reddit afew days and one of the first things I came across was a child being bullied and baited by so called mature adults. The reason? At a time when he was dealing with the trauma of being orphaned he dared to make a bullshit post for attention. Looking at his post history I discovered that this was part of a long pattern of people bullying him on his posts. Just what is this kid supposed to have done to deserve to be treated like this? Nothing that I can see.