The only thing that's stopping me from going "yeah, the protesters are clearly on the side of the Kraken" is that a few of the protesters clearly just realized there's a Kraken attacking ships behind them, which changes the energy of the whole thing from "Yeah, Jon Kent, Jay and Aqualad are on the side of the monsters against the polluters!" to "Wait, do Jon, Jay and Jackson even realize what's happening behind them?"
Anyway, if they are supporting the Kraken, more power to them. It'd certainly be the second "political statement" image in the series that actually hits (after that wonderfully understated "Welcome to the City of Tomorrow" panel in issue 2).