♪ and we don't need your vaccine ♪ and in washington, d.c., protesters gathered to express their anger at government vaccination mandates. the defeat the mandates rally took place on the national mall sunday. organizers said they expected 20,000 to attend but only a few thousand showed up. cnn's joe johns was there and has the story. >> reporter: no secret america is polarized over the issue of vaccines. and this event on the national mall was visual evidence of that fact. one of the things that people were concerned about at the very outset was that it was being billed at an event for medical autonomy. in other words, the right not to