Manassas, Virginia — President Biden and Vice President Kamala Harris continued their reelection campaign’s push to put abortion rights front and center in the 2024 election with a rally— although the event was interrupted by pro-Palestinian protesters. Mr. Biden took the stage last, surrounded by supporters with signs monikered “Defend choice” and “Restore Roe,” but less than a minute into his remarks, he was interrupted by the protesters. “How many babies have you killed?” shouted the first protester before being escorted out by Secret Service agents. As Mr. Biden continued…