Why was downtown so congested on Saturday afternoon? Because of the annual St. Patrick's Day parade. Here are a few images of the cloyingly family-friendly festivities that took place that day. You'll find images of Gavin and Jen, David Chiu, an increasingly handsome Ross Mirkarimi, gingers, the elusive SF blue-collar worker, and more.

Remember, tomorrow is actually St. Patrick's Day, kids, so rest up tonight.