Okay, I got it. The man was an ELECTRICIAN, right? Seen leaving that block of flats. So he was probably doing a house-call, as electricians do during the daytime. He's called out to this flat.
INNOCENT VICTIM: "What seems to be the problem?"
TYPICAL UNPUNISHED CRIMINAL: "Well, we laid a load of bombs the other day but for some reason they didn't go off properly. We think there's something wrong with the electrics. Can you take a look?"
INNOCENT VICTIM: "No way! I'm not helping you make bombs. I'm leaving right this instant to catch a tube back to the flat I struggle so hard to pay for. Scr ew you guys."
INNOCENT VICTIM leaves flat, thinking: "Jeez, the nerve of terrorists these days", unaware that in the distance he is being observed through binoculars.
TYPICAL BRITISH MORON 1: "Hey, check this guy out. He's dark skinned and is wearing a really big coat, and I think I read somewhere or dreamed maybe that people who wear big coats are terrorists. Let's follow him."
ATYPICALLY LESS MORONIC BRIT 2: "Okay, but let's not forget British weather isn't exactly hot by standards of people who, for sake of argument, come from hotter climates... the kind of people who may look... darker-skinned than us?"
TYPICAL BRITISH MORON 1: "Well, in that case he's just some immigrant no-one cares about."
MORE MORONIC FOR KNOWING MORONIC BRIT 1 BRIT 2: "Groovy. I hate immigrants."
They follow INNOCENT VICTIM to the Underground.
TYPICAL BRITISH MORON 1: "Hey, check this out. The guy in the big coat is entering the Undeground. Say... isn't that where the bombs went off?"
MORE MORONIC FOR KNOWING MORONIC BRIT 1 BRIT 2: "Yeah, and why else would someone enter the Underground if not to plant bombs?"
PASSER BY: "Well, it is the most-used mode of transport in London."
TYPICAL BRITISH MORON 1: "Hey, we're undercover. You can't say anything to us because we're invisible. Get lost."
INNOCENT VICTIM: Jeez, thank God I'm leaving this scary place and getting away from all those terrorists who may try and kill me.
TYPICAL BRITISH MORON 1: "Hey, if he gets on that train, we'll lose him."
MORE MORONIC BY THE MINUTE BRIT 2: "And he may detonate his big coat and kill innocents."
TYPICAL BRITISH MORON 1: "That's a triumph of deduction. Let's follow him."
INNOCENT VICTIM: "Jesus, I'm going to miss the tube. I better run for it."
TYPICAL BRITISH MORON 1: "Look! He's running. He must be guilty of something in a big coat like that running towards those bleeping train doors."
MORE MORONIC BY THE MINUTE BRIT 2: "Good call brother. No-one ever runs towards the train unless they're criminals. Especially if the train is already here and is likely to leave before you get to it if you're too slow. Stop him!"
The MORON BROTHERS run after INNOCENT VICTIM and jump on him.
MORE MORONIC BY THE MINUTE BRIT 2: "What do we do now? Tell him his rights?"
TYPICAL BRITISH MORON 1: "Well, technically we have no grounds to arrest him. Unless Blair stays in power for another full term, we're unlikely to be given power to arrest people on charge of over-dressing whilst being black. I suggest we push him down so he can't take his coat off."
MORE MORONIC BY THE MINUTE BRIT 2: "Right!"
The MORON BROTHERS push INNOCENT VICTIM to the floor.
MORE MORONIC BY THE MINUTE BRIT 2: "Now what?"
TYPICAL BRITISH MORON 1: "Well, he hasn't commited a crime, he hasn't detonated any bombs and he isn't praying to Allah. If we turn back now we'll have lost all faith people have in the police being competant."
MORE MORONIC BY THE MINUTE BRIT 2: "So we trump up a charge and make it look like we've done good?"
TYPICAL BRITISH MORON 1: "Can't. Human rights groups are hot on keeping statistics on false charges made against ethnic minorities. I say we look to our past for inspiration."
The MORON BROTHERS try to think.
MORE MORONIC BY THE MINUTE BRIT 2: "We could apply the old witch-ducking technique. If we drown him and he dies, he's innocent, otherwise he's guilty of hygiene laws for being a dirty immigrant floating in clean rivers."
TYPICAL BRITISH MORON 1: "Good thinking. But I don't see him co-operating. It'll be a lot easier to get him to a river, and make sure he's innocent, by killing him beforehand."
MOST MORONIC BRIT 2: "Okay. But remember he's wearing a big coat. Best shoot him twice in the head. Three times to be certain."
TYPICAL BRITISH MORON 1 fires five rounds in INNOCENT VICTIM's brain.
PASSER-BY: "Are you guys terrorists?"
TYPICAL BRITISH MORON 1: "WE'RE UNDERCOVER! GO AWAY!"
MOST MORONIC BRIT 2: "Yeah, he's innocent."
TYPICAL BRITISH MORON 1: "Innocent, yeah. Definitely. What now?"
MOST MORONIC BRIT 2: "Well, if my eyes do not fail me, I'd say that repeating sign on every single step leading out of the tube says that there's a McDonalds only 200 yards away, and keeping the peace is hungry work."
PASSER-BY: "Terrorists! Heeeeeeeeeeelp!"
TYPICAL BRITISH MORON 1: "Hold that thought, brother. Our work is not yet done."
Yeah, under the circumstances... who would have done differently? BTW: to avoid confusion due to typos, always double-check when typing the words 'uniformed' or 'uninformed'.