A split Democratic party echoes the 1968 race

HE was considered to be one of the Democratic Party's most popular politicians. A former vice-president and senator who espoused progressive but mainstream positions on social and economic issues. Well-liked by African-Americans as well as by white blue-collar workers, he seemed to have an excellent chance of winning when he announced that he was going to run for the presidency against an unpopular Republican politician.

But major ideological and policy divisions were driving American politics and in the process, polarising the Democratic Party with left-leaning young activists challenging the mainstream Democratic presid…