By Jonathan Allen ST. PAUL, Minn. (Reuters) – Three former Minneapolis officers broke the law by failing to stop Derek Chauvin killing George Floyd during an arrest and were indifferent to the handcuffed Black man’s dying pleas, a prosecutor told a jury in opening statements in the federal trial on Monday. Tou Thao, J. Alexander Kueng and Thomas Lane are charged with violating Floyd’s civil rights during his arrest on a road outside a Minneapolis grocery store in May 2020, video of which sparked street protests against racism and police brutality around the world. In opening a trial that hinge…