By Peter Graff

GLASGOW (Reuters) - An attack on an Asian-owned shop in Glasgow on Tuesday raised the spectre of reprisals against Muslims as police investigate a suspected al Qaeda plot in London and Scotland.
Scotland's 50,000 Muslims have long been among the best integrated and most successful immigrant communities in Britain but the strike on Glasgow airport on Saturday by two men in a fuel-packed jeep has been a jolt to the system.

It was the first attack blamed on Islamist militants to hit Scotland, after a series of suicide bombings and failed plots that have mostly been centred on London.
Then early on Tuesday, attackers rammed a car into an Asian-owned shop in the Glasgow suburb of Riddrie and set it ablaze. Residents fear it was revenge for the airport strike.
"That is what I thought myself. It might have been racially done because of what happened at Glasgow airport," said Frank Mattheson, a pensioner, who bought his daily newspaper there.