It depends on the local government. If you have a pro-Trump rally in New York, you can be certain the government will object. That the government lets its supporters rally, and cracks down on its opponents (and socialists believe that trying to crush religion is a policy to be supported), suggests that those in charge do not perceive there to be a serious public health threat from Covid19 (if they did, they would be very protective of their supporters, and demand that their enemies, which includes frum Yidden, get together mask free).
