President Trump has been surrounded by controversies over his rhetoric when it comes to race. Some hoped he would moderate his tone in office, but four years later, the president has inflamed racial tensions more — through both rhetoric and policy.Related reading and listening Will courts let the Trump administration put a citizenship question on the Census?All four living ex-presidents draw a sharp contrast with Trump on systemic racismAllegations of racism have marked Trump’s presidency and become key issue as election nearsSubscribe to The Washington Post: www.washingtonpost.com/chdtoffer