Who told you that? It's not anybody's duty to do anything at all except follow the rules. We're not having a political debate here about controversial issues. He's just reciting some stuff he read off an international news article. Googling "man slits own throat walmart" returns a full page of relevant results.
The question "should Tony of posted a source for this?" didn't even register in my brain when I read the OP. It's news. It's all over the place. It doesn't need to be sourced.
It's not even an issue of tony not posting a source anymore; its the fact that
he knows that people don't like it when he doesn't include a source and does it on purpose to make people upset. He knows that he could easily post the source in a second, but he intentionally doesn't so that people will get upset and then guys like you will shame us for getting upset. Its a subtle annoyance, sure, but when its done this many loving times it really becomes a nuisance