The police? Not so much. Police don't make law, they shouldn't get to decide very many things at all.
The state (or city, or nation, where appropriate)? Absolutely, but only when absolutely necessary. (like curfew orders which follow widespread disorder and destruction)
>>colech+(OP)
In practice, they do have that right. And they have the right to use reasonable force to enforce that. So arguing that police are always wrong to use force to clear an area, regardless if media are there or not, is an argument against the laws as they are.