On March 14, civilians threw rocks at police officers at 11 a.m. when the police tried to confront protesting monks at Ramoche, a small temple in central Lhasa.
Along with enthusiastic well-wishers, Mr. Obama is expected to confront protests about his foreign policies from a coalition of trade unionists, students, lawyers and Muslim groups.
For years, both have confronted protests over difficult economic conditions and widespread youth unemployment.
Confronting protests and demonstrations, and with at least 78 people killed on the streets, he first offered to leave office in 2014 — a symbolic step backwards — then fled, his 23-year rule brought to an astonishingly rapid end.
So far, the government has deployed the Revolutionary Guards, Basij vigilante squads and special riot police officers to confront demonstrators protesting the June 12 presidential election results.
Universities have been a hotbed for political activities, and the government had warned ahead of the opening of the universities this week that it would confront any protests fiercely.
But if that crossover ever happens and police confront sizable protests from the mainstream Sunni population, the delicate balance between ruler and ruled is likely to be severely tested.
The far-right groups were embarrassed and divided by the forced time change, a group did walk Locke earlier in the morning but only five showed up at the park to confront counter-protests.
"The major supporters of us in health care last year were confronted with protests at their corporate headquarters, protests and harassment at the C.E.O.'s homes," said R. Bruce Josten, the chief lobbyist at the chamber, whose office looks out on the White House.
Ten years ago, those same musicians, confronted by protests, were forced to bypass the city.
