Why he did it....
1. Wtf is a Smullet? Sounds like some new layer of lameness worse than a mullet (yes I have had a mullet in my life, so I know!)
2. Some cruel soulless sadist named him Jussie. That would drive any of us to the brink. Why didn't he take on a stage name? Unless this is his stage name, which would also explain this. It would just mean he is crazy, perhaps sociopathy or even psychopathy. No man who would choose that name has a spotless mind, and zero sunshine within.
3. It was actually an elaborate political-pun-based performance art... What was that around his neck? A Fake Noose, literally!
4. Pouring chemicals on him = Protest of Trump attacking the EPA and allowing more industrial pollution.
5. Coming out of Subway = Reference to New York's subway system, one of its most iconic features. This lets us know the message is truly directed at Trump.
Jussie is either a brave genius, or a certifiable maniac. Or both.