WILMINGTON, Del. (AP) — Former President Barack Obama warns that American democracy may not survive if Donald Trump is reelected. Obama’s scathing assessment was echoed Wednesday night by Kamala Harris at the Democratic Convention as she embraced her historic role as the first Black woman on a national political ticket. Obama himself was a barrier breaker as the nation’s first Black president. He pleaded with voters to “embrace your own responsibility as citizens” and vote this fall — no matter the impediments of the coronavirus pandemic or postal slowdowns. Joe Biden accepts his presidential nomination Thursday night and gives a speech he hopes will send party workers out to do political battle.