These people are demonstrating for their leader.
The leader is being shown around by some people.
The people are demonstrating for their leader means that the leader is being shown around by them.
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 s1 x1 x2.(n_leader(x1) & Actor(e1,x2) & n_people(x2) & a_around(s1) & Manner(e1,s1) & Theme(e1,x1) & v_show(e1))