In Tbilisi, the Georgian Foreign Ministry summoned the Russian ambassador to present a formal note of protest.
Whatever their motivation, the protests present a troubling challenge for the Communist Party.
The protests present a logistical headache for the Metropolitan Police, whose officers will have to make sure the procession is not disrupted while respecting the public's right to voice an opinion on one of Britain's most divisive politicians.
Municipal elections always present an opportunity for a protest vote.
Harney County ranchers initially took sides with Bundy's militia because its action was presented as a protest of the treatment of local ranchers Dwight Hammond Jr and his son Steven.
MATTATHIAS SCHWARTZ: Well, to be fair to Obama, these protests seem to present a real puzzle for him, and for the Democratic Party.
The point of staging unauthorized concerts in unusual locations — before the cathedral, there were performances in the center of Red Square, outside a prison and in a subway station — the women explained, was to present an image of "pure protest, saying: super heroes in balaclavas and acid bright tights seize public space in Moscow".
In 2001 when the president, Isaias Afwerki, cracked down on all political opposition and jailed more than 10 independent journalists, the Italian ambassador to Eritrea presented a letter of protest to the authorities.
At one point six Republicans were voting "present" as a protest, but the number dwindled to three -- Representatives Henry Bonilla of Texas, George Nethercutt of Washington and Zach Wamp of Tennessee, all members of the Appropriations Committee.
Argentina has presented a formal note of protest to the UK ambassador over the naming of a large area of Antarctica as Queen Elizabeth Land.
