That's funny, California! I'd be curious to see what exactly is illegal about smashing trash, in particular e-waste. Presumably there is something toxic, but I'm skeptical. at the very least the toxic parts could be subtracted from the smash, but that depends on California's perception of toxic. We all know California has a very progressive view of what is toxic, so I'd assume that's an expansive topic.
Ultimately I would argue this conduct is covered by freedom of speech, but that depends. IF the event is documented with photography, video, or even has any kind of spectator audience... then it's clearly a form of exhibition, and speech.
But even actors performing probably have to obey OSHA regulations, and so it goes...
This is ridiculous.