Whatever the biggest televised event is in the next twenty four hours. I'm going to materialize naked live in air screaming "the end is nigh unless we repent" and then go into a list of ecological and social reforms.
I’d do the opposite. Crash the biggest event I can find with ample media coverage, grab a mic, explain that I’m projecting myself backward through time from 200 years from now, and that I don’t have much time, and now is when it all goes wrong. To save everyone we need to
[Teleport to my living room]
I’m kidding, of course. I’d probably just waste it on something dumb(er).
I can already hear “The mainstream media is playing tricks on us to keep us from enjoying ourselves by [insert any dumb shit like rolling coal or something]“
Odd train of thought: what would the rolling coal equivalent be for an EV? Just wasting fuel for something that looks cool... So high voltage discharge under the car shooting lightning bolts? That actually sounds kinda cool, now that I think about it, but it is wasteful.