. >> reporter: monica, the protests behind me at msb began at about 4:00. about five minutes ago, a group broke off from that protest and have now gone into the middle of the lanes here between city hall and msb and are blocking traffic. now, what you're seeing is that group is they're starting to form up in the lanes. that's where they're moving. this are clear indications they about going to stop trafficment. the question is how long will police allow this to last? if we pan more to the right, we can see there is a considerable contingent of philadelphia police officers on bicycles here. this is really just evolving right now. it started with about 10, 15 people who entered the lanes and blocked traffic. that was about five minutes before we began here. and now that number has increased. you're looking at scores of people in there. and at this point, the police are letting it play out. we'll see how long that will go. but as you said, there have been a number of protests scheduled for today, and that actually did happen today. in fact, two groups are supp