Harris, 55, was the only African-American woman seeking the Democratic presidential nomination.
New reports say Moscow's troll farms didn't only work to discourage black voters in the US elections in 2016 to help elect Donald Trump, but they are reportedly still operating by pushing for racial and political passions in America.
Howard Schultz, who steered a small coffee chain with 11 stores to 28,000 outlets, may run for US president.
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