Legal Question in Civil Rights Law in Utah

Re: should the police be able to kick in door at 3am when there is no thret

It depends on the information on which they relied to make the entry. The police would have needed to convince a judge that the reason for the "no knock" warrant - such as that evidence might be destroyed, or weapons obtained - justifies the intrusion.

Re: should the police be able to kick in door at 3am when there is no thret

There is no specific time limit to file charges, except for the statute of limitations after which a crime cannot be prosecuted. The statute of limitations varies for different crimes, but is generally several yaers.