Sadly, that kind of thing has not been rare. We have had a few local cases over the years that were similar.
in the 1980s in Houston at an apartment complex on Gulfton road in southwest Houston Police kicked in a man's door and gunned him down like a dog. Without a warrant. They said they had a drug tip. He was a hard-working Mexican guy with a family. His young pregnant wife had to watch while he was murdered. None of the cops got in trouble. Of course there were no drugs.