42 USC Sec. 1983 -Every person who, under color of any statute, ordinance, regulation, custom, or usage, of any State or Territory or the District of Columbia, subjects, or causes to be subjected, any citizen of the United States or other person within the jurisdiction thereof to the deprivation of any rights, privileges, or immunities secured by the Constitution and laws, shall be liable to the party injured in an action at law, suit in equity, or other proper proceeding for redress …

Check with an experienced and reputable civil rights lawyer about filing this type of action in federal court. You might also have a tort claim for false imprisonment. Also, please note that while you commit no wrong in either asking a police officer to examine a detained suspect, videotaping their acts, or even asserting your rights, you are not on strong legal ground when your insistence crosses over into actual interference in the detention and transportation of a detained individual.