But he's not a violent masked group like the KKK or antifa, he's just one lonely millennial.
If you read the link you'll see that he's only allowed to be a lonely millennial on the evening of October 31, or if he's headed to the stage. Makes perfect sense. After all, it's not as though anyone was ever killed on Halloween, or that any any important government officials have ever been killed by stage actors.
Actually, here's the relevant part of the bill: "It shall be unlawful for any person ... to ... mask, hood, or other device, whereby a substantial portion of the face is hidden or covered..." Get a good lawyer. From the photos we can see that his face is not masked, hooded, or concealed by what most juries would consider a "device." Moreover, his face is not hidden, and, in the general sense of the word, it is not "covered" because there is no hat, shawl, or blanket over it. Alan Dershowitz should take this on for free.