CHICAGO — Despite some protesters’ vows to “make it great like ’68,” history did not repeat itself, and the streets of Chicago did not descend into chaos during this year’s Democratic National Convention. And inside the United Center, delegates cheering the presidential nomination of Vice President Kamala Harris experienced none of the turmoil that upended the 1968 convention, when security forces roughed up journalists and attacked campaign volunteers. ALSO READ: Donald Trump exploits AP photo error for new $99 ‘Save America’ book Want more breaking political news? Click for the latest headli…