And they could have easily searched the house while no one was at home.
Yep. One of the oldest tactics in the book is to detain someone away from home “for questioning” and serving a search warrant on the home while no one is there. Unless of course they wanted to murder someone, as this case indicates.
Even if there WAS a bag of pot in the house, that can’t be much more serious than creeping a stop sign or not quite making it through a yellow traffic light before it turns red. How long before these offenses will be responded to by firing squad as well?