very little in life that involves humans winds up perfect. The police are no exception. yeah, we all want perfection, and no mistakes, but that is just not reality.
What you can take to the bank though, is that without the police, life would be pretty intense for us all. Like them or not, society wants and needs law and police to enforce those laws.
My problem with nearly all of these stories is the LAZINESS these events represent.
In nearly every wrong raid, a simple staking out of the house and actually checking out of the "informant's" story would have ended this with no one ever knowing about it.
But the police usually have no idea who is in the house, whether children are present (even when toys are strewn in the yard), or if the criminal activity they suspect is actually going on.
Yes, it takes more time to check out a house before breaking in. It's safer for all involved, though, too.
I think these types of raids are necessary at times. There needs to be a LOT more due diligence before they are used.