there's definitely going to be some bloodthirst within hours. There's already people that say there's nothing stopping them from murdering others aside from the threat of punishment. At the very least there'll be a steep spike in murders as people go out to commit revenge killings, be they justified or not - they would happen for certain. The preppers would certainly use their arsenal to "defend" their stashes. To-be mass murderers would do their thing. Many people will opt to go out with a bang. Sociopaths will get their last hit of pleasure. Just chaos in general. All instincts unleashed. No need to think about consequences, instant gratification now for everybody.

Hollywood exaggerates things of course, but imagine all laws got abolished and consequences of your actions didn't matter. It might be few that take that chance, but it'll certainly be enough to raise hell