Night of violence across America leaves streets scarred, outrage simmering By Brendan O'Brien and Carlos Barria   Protestors demonstrate outside an entrance to the White House over the death in Minneapolis police custody of George Floyd, in Washington, May 31, 2020. REUTERS/Yuri Gripas   MINNEAPOLIS (Reuters) - Another night of outrage left stores looted and cars smoldering in many U.S. cities on Sunday as curfews failed to quell violence that replaced peaceful dayt