Trump: “Tough people” in military, police, and a biker group would be “very bad” at “a certain point” with the left.
Perhaps the “very bad” thing that would happen as a result of “tough” Trump supporters in the military, police, and Bikers for Trump being pushed “to a certain point” would be taking part in a peaceful protest that gets out of hand due to factors beyond their control. Maybe he’s talking about a less violent form of aggression that’s nonetheless “very bad, very bad.”
But the more obvious—and plausible—interpretation seems to me to be that the president is suggesting these armed political supporters would respond violently if his presidency is imperiled. Whether or not you view this as empty bluster, that suggestion alone should chill supporters of liberal democracy as much as anything Trump has ever said.