These people are demonstrating for their leader.
The leader told these people to come and demonstrate.
People where not necessarily told to come and demonstrate for their leader.
exists e1 x1 x2.(n_leader(x2) & of(x2,x1) & n_thing(x1) & n_people(x1) & for(e1,x2) & Actor(e1,x1) & v_demonstrate(e1))
exists e1 p1 x1 x2.(n_people(x2) & n_leader(x1) & Topic(e1,p1) & Recipient(e1,x2) & Actor(e1,x1) & v_tell(e1) & exists e2 e3.(Actor(e3,x2) & v_demonstrate(e3) & Actor(e2,x2) & v_come(e2)))