In this astonishing video out of Watertown, MA, you see heavily armed militarized police rip a family from their home and treat them like potential terrorists. The cops bang on their door, then detain them, search their home, and shout orders at them all while pointing assault rifles at them as though they're dangerous terrorists.
If you violate people's rights to catch someone who violated people's rights, you become a criminal and serve to impose what you're fighting against.
Here's the description from the poster on YouTube:
WATERTOWN, MA -- On Friday, April 19, 2013, during a manhunt for a bombing suspect, police and federal agents spent the day storming people's homes and performing illegal searches. While it was unclear initially if the home searches were voluntary, it is now crystal clear that they were absolutely NOT voluntary. Police were filmed ripping people from their homes at gunpoint, marching the residents out with their hands raised in submission, and then storming the homes to perform their illegal searches.