The far-left radical movement known as Antifa has been getting its own taste of cancel culture. Just look at what happened on Aug. 19 in Brooklyn’s Crown Heights neighborhood. Masked, fist-clenched agitators belonging to the anarchist collective turned up to sow chaos — but locals banded together to confront the troublemakers, telling them to get lost... Experts who track domestic terrorism and extremist movements aren’t surprised: Once the face of a grassroots leftwing insurgency, Antifa has lost its spark... But experts warn that could be a dangerous thing, as the vacuum has given way to even more fringe and violent...