Four Memphis residents are suing U.S. and Tennessee officials, saying they have been harassed, arrested and physically mistreated for engaging in First Amendment protected activities by observing and recording law enforcement agents in their city. A lawsuit filed Wednesday in federal court targets the Memphis Safe Task Force, comprising agents from 13 federal agencies that President Donald Trump ordered to the city to fight crime alongside Tennessee State Troopers and the Tennessee National Guard. Since late September, hundreds of federal, state and local law enforcement personnel tied to the task force have made traffic stops, served warrants and searched for fugitives in the majority Black city of about 610,000 people. The lawsuit says the task force has conducted over 120,000 traffic stops. "In the professed name of crime control, Task Force agents have stopped, menaced, and arrested Memphians engaging in routine, day-to-day activities,” the lawsuit states.…