Monday at noon, if you happen to be outside the Jackson Federal Building downtown, you’ll see colorfully clad dancers demonstrating – to urge Sen. Patty Murray and other local lawmakers to support single-payer health-care. Helping lead the way: Dina Lydia Johnson, who’s also active with the Highland Park Action Committee (which, incidentally, meets Monday night, 7 pm at Highland Park Improvement Club). She’s put together a webpage with more about the demonstration – see it here.