That does not make it legal and it does not eliminate the responsibility of asking for the warrant and using it.
Not saying there was a conspiracy here, but bad judges exist and arranging for a warrant is possible even for honest judges. If you are a policeman and you want to kill someone, get a judge to sign a "no knock" warrant, get in their house and shoot them, it happened many times; there were cases when the warrant was not even for the address of the poor guy that was killed and last year the warrant was for someone that borrowed a lawn mower from the judge who signed it and did not return it. So the warrant excuse is not so good.
That does not make it legal and it does not eliminate the responsibility of asking for the warrant and using it.
Not saying there was a conspiracy here, but bad judges exist and arranging for a warrant is possible even for honest judges. If you are a policeman and you want to kill someone, get a judge to sign a "no knock" warrant, get in their house and shoot them, it happened many times; there were cases when the warrant was not even for the address of the poor guy that was killed and last year the warrant was for someone that borrowed a lawn mower from the judge who signed it and did not return it. So the warrant excuse is not so good.