[dragnet2]

The police had closed off the interstate to accommodate the so called protesters.

That infers it was perfectly safe to play on the freeway, when it clearly was not.

If that's the case, the cops, the city government and the state are fully liable for all damages.

[Greenperson]

The lawsuits begin in 3,2,1. The ultimate irony will be lawsuits against the very people (mayor, governor, highway patrol) that facilitated the illegal activity.