April 19 (Reuters) - Lawyers for Tyre Nichols' family filed a $550 million federal lawsuit against the city of Memphis on Wednesday, seeking damages in the beating death in January of the 29-year-old Black man at the hands of police, attorney Ben Crump said. "This lawsuit and the amount we are suing for is a message that if you keep giving license to these gang-minded police officers to perpetrate acts of terrorism on Black and brown people, then we’re coming to your city and we’re going to bring these lawsuits," Crump said at a news conference in Memphis. See here for a complete list of exchanges and delays