The Jesse Jackson Speech That Helped Redefine the Democratic Party’s Base

In his 1984 speech at the Democratic National Convention in San Francisco, Mr. Jackson argued for a more diverse coalition for the party.

Extremist rhetoric is often found in government messaging. Who's the target?

In a rare move, the White House took down a racist post last week from one of President Trump's social media accounts. But extremism researchers say it fits a pattern of mainstreaming extremist ideas.