Can I walk around a roadblock?
This really depends on each individual situation and the best advice is follow what the locals do. With some roadblocks it is fine to walk around it and with these ones it is often possible to take transport up to one side, walk to the other side and catch some other transport from that side. For some though, the protestors can get angry and turn violent if people try to get past and it is certainly not advisable for you to try in those situations. We are unable to give an answer that applies to all situations though but if in doubt dont try.