A group of police officers in riot gear.
The officers are protecting themselves from protesters in the streets.
Riot gear is used for other reasons besides protesters in the streets.
exists x1 x2 x3 x4 x5.(a_topic(x1) & in(x1,x4) & n_gear(x4) & of(x4,x5) & n_riot(x5) & of(x1,x2) & n_officer(x2) & of(x2,x3) & n_police(x3) & n_group(x1))
exists e1 x1 x2 x3 x4.(n_street(x4) & n_group(x2) & n_officer(x1) & in(e1,x4) & from(e1,x3) & n_protester(x3) & Theme(e1,x2) & Actor(e1,x1) & v_protect(e1))