CHICAGO — Thousands of left-wing activists who plan to protest the Democratic National Convention next week won a court battle today, as the city government agreed to allow portable toilets where the protesters plan to march. Previously, the City of Chicago had argued that portable toilets at Union Park, four blocks from United Center — where Vice President Kamala Harris will ceremonially accept the presidential nomination on Aug. 22 — posed a public safety risk. The portable toilets, city officials said, could be used to launch terrorist attacks or fashioned into weapons. Want more breaking p…