An interactive map of botched SWAT and paramilitary police raids, released in conjunction with the Cato policy paper: "Overkill: The Rise of Paramilitary Police Raids," by Radley Balko.
They are, however, part and parcel of two broader phenomena. One is the militarization of domestic law enforcement. In recent years, police departments have widely adopted military tactics, military equipment (armored personnel carriers, flash-bang grenades) — and, sometimes, the mindset of military conquerors rather than domestic peacekeepers.
The other phenomenon is the increasing degree to which civilians are subject to criminal prosecution for noncriminal acts, including exercising the constitutionally protected right to free speech.