Looking different is not probable cause

For perspective on racial profiling and warrantless searches, see "Black Men Can't Run," an excellent personal narrative from Paul Myers in the UK Guardian. We require police to have warrants for searches for a reason: when we give the State authority to conduct arbitrary searches, we open the door for officers of the State to act on personal and institutional prejudices, which will lead to an increased number of violations of civil rights among people who look or act differently.