gobbledigook you wrote
"Don't be so condescending - of course I've noticed there is no death penalty. However, if once of the suicide bombers was shot by police I wouldn't feel in the least bit sad having seen what the innocent citizens of London have gone through.
If someone murdered my mother, father, brother, husband, child I would feel no remorse at their death. Not many sane people would surely?"
So how would you feel if you were the mother of this Brazilian man? The police who shot him (think it was one man) are responsible for their ownactions and it is possible (although highly unlikely) that he could face a murder charge. That's another possibility at the moment (or whoever gave the say so from higher up).
Onto intelligence and armed police:
When I was 9 our house was raided by armed police at 2am on New Years Day (my mother opened the door to them in bullet proof vests and carrying guns and famously-within the family- said "ooo you look just like the professionals"). We were a "nice" Daily Mail reading (ha ha is that a contradiction) middle class family by the way The "intelligence" that led to the armed raid was a drunken man (my uncle by marriage) taking a taxi ride and talking a load of nonsense about nothing. He used some fairly common names (was talking about another uncle) and the taxi driver suggested to the police he could be a murder suspect (because the common names he used- one was Stuart to give you an idea how common- matched the name of a murder suspect). Fine - in this case he was arrested, roughed up a bit, police dogs trampled the garden and released about 12 hours later a bit more sober - We all recovered form having men with guns in our house- but it was hardly high class intelligence that led to this raid. Shortly afterwards a similar raid was carried out by a different police force and young boy was shot in bed (he moved- they shot)
FWIW if the police knew that man X was going to plant bomb Y at such and such a time then no problem - shoot him if you have to- the chances of mistaken identity are very low- but if they are going to rely on much dodgier evidence (as in man leaves block of flats wearing big coat) then they need to be cautious. As already pointed out shooting innocents tends to breed terrorists. Make a few more of these mistakes and we'll be having young men queing up to blow themselves up. It is a dangerous policy so the police need to be sure they are getting it right. Otherwise they're not protecting us- they're killing the wrong people and breeding terrorists. Obviously it is a difficult balance to strike but Clearly at the moment they are getting it wrong - and that is dangerous. And if it was your son I'm sure you wouldn't find it acceptable for them to say "oh whoops sorry our mistake but understandable mistake eh?"