A crowd of possible supporters or protesters holding signs and fliers up.
the people are protesters
If a group is of supporters or protesters then it cannot be assumed that they are definitely protestors.
exists e1 s1 s2 x1 x2 x3 x4 x5 x6.(a_topic(x1) & of(x1,x2) & a_up(s2) & Manner(e1,s2) & Theme(e1,x4) & Actor(e1,x3) & v_hold(e1) & subset_of(x6,x4) & n_flier(x6) & subset_of(x5,x4) & n_sign(x5) & (x2 = x3) & (n_supporter(x2) | n_protester(x2)) & a_possible(s1) & Theme(s1,x2) & n_crowd(x1))
exists p1 x1.(n_people(x1) & exists x2.((x1 = x2) & n_protester(x2)))