it is somehow acceptable for police to show up a a residence in full battle gear, when the resident has no criminal record and there is no known probable cause to use such deadly force. Swat should be rarely, if ever used. Instead they're used in more than 90% of these cases.
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All of that is obviously bullshit if you spend 45 seconds thinking about reality.
Obviously there is an infinite number of different calls to police that can justify an aggressive, armed, SWAT response to someone previously unknown to law enforcement.