Louisiana law criminalizes approaching police under certain circumstances

[SomewhereInTheMiddle]

14. Crowd Control?

I am picturing a protest with 5000 people marching down a major street towards the LA Capitol Building. Ten cops spread out in a line with 20ft between them covering the whole street. The move to block the marchers. The marchers step forward the Police demand the marchers to retreat. To comply with the law the marchers have to step back 25 feet. The police then march forward and repeat the demand.

With this method the police can completely control the marchers, or they can arrest the marchers if they fail to comply.

This use of the new law seems to be an obvious violation of the 1st Amendment.

But that can't be what the legislators are thinking, surely .