Pakistani protesters burn a US flag during a protest in Multan on November 27, 2011, against a NATO strike on Pakistan troops. – AFP Photo

KARACHI: Thousands of people gathered outside the US consulate in the city of Karachi on Sunday to protest against a Nato cross-border air attack that killed 24 Pakistani troops.

A Reuters reporter at the scene said the angry crowd shouted “Down with America”. One young man climbed on the wall surrounding the heavily fortified compound and attached a Pakistani flag on barbed wire.