Man standing on car grabbing his crotch with a group of protesters.
people gathered together outside
Protesters are people. Standing on a car implies that the man is outside.
exists e1 x1 x2 x3 x4 x5 x6 x7.(a_topic(x1) & on(x1,x3) & Theme(e1,x5) & Actor(e1,x4) & v_grab(e1) & with(x5,x6) & of(x6,x7) & n_protester(x7) & n_group(x6) & n_crotch(x5) & of(x5,x1) & n_male(x1) & (x3 = x4) & n_car(x3) & n_standing(x1) & of(x1,x2) & n_man(x2))
exists e1 p1 s1 x1.(a_outside(s1) & Manner(e1,s1) & exists s2.(Theme(s2,x1) & a_together(s2)) & Topic(e1,p1) & Actor(e1,x1) & v_gather(e1) & n_people(x1))