Nothing, and I mean nothing, should allow the police to enter anyone's home without probable cause AND a search warrant. They certainly aren't Constitutionally allowed to take people's property without a properly processed search warrant.
The fact that none of these reports, except the one mentioning that 2 guns were taken, does not mean it didn't happen.
Time for you to think about what you're reaction would be if the cops showed up at night, entered your home, rummaged through your property, and decided to take some of it with them.
A cop was shot and in the area, it certainly sounds like probable cause to me. Although it is unusal to evacuate everyone from their homes for six blocks, it wasn't excessive or in violation of anyone's rights. I am highly skeptical of the woman who claimed to wake up to police searching through her house (most likely, the press release failed to point out that someone ELSE in the home allowed them in).
A policeman in my home without a warrant is a criminal.
Criminals in my home will be shot.
End of discussion.