Witnesses said the roughly 200 helmeted police officers on hand had started the shooting, to break up a planned rally to denounce Mr. Arafat's Palestinian Authority and his self-rule agreement with Israel.

Mr. Barrett got what he wanted yesterday - helmeted police protecting his right to march on Washington Street, a crowd of angry counter-protesters that drew pepper spray and 10 arrests.

Mr. Barrett's sad parade of eight followers was separated from an angry crowd of about 250 by barricades and helmeted police on horses.

At the end of the two-hour mass, about 200 radical students rallied outside the gate to the border, confronting rows of helmeted and baton-wielding police.

When the film shows helmeted police storming in, the scene brings to mind the streets of Chicago during the 1968 Democratic convention, a reminder that no simplistic view of the benign old Woodstock days makes sense.

About 500 helmeted police officers used clubs and fired tear-gas and concussion grenades to disperse the mobs in the city's financial district.

He heard the roar of the mob at the rear, and caught a glimpse of the helmeted police and the lurching meat waggons.

The streets around the station were littered with rocks and bottles that had been thrown at the helmeted police and with glass from broken windows.

The crowds burned one police car, destroyed five others, threw bottles at helmeted police, torched an overturned taxi, and ripped sod from the playing field at Tiger Stadium.

Inside the museum, visitors must pass through a barrier of effigies of the old leadership's helmeted, shield-and-truncheon-bearing political police to inspect the devices by which they were spied on.