I think those awful events in London are really terrible and I feel very bad about those who were innocent and lost their lives without no reason. And I think I should add to the list to that poor brazilian guy who was assasinated recently.
About the other subjects you were talking about, I do believe that inspite the United States has existed during an almost continuos state of war, most of its inhabitants don't really realize that war is more than a few green lights in your TV screen. I do not desire them to live in war, however it seems they always manage to be in one. A lot of aspects of the culture of the USA scare me a lot, however I think the most frightning is that their are being manipulated in a way which results obvious for anyone outside the USA but invisible for those who live into. Today I know there are exceptions to this rule, so I'm glad about it however I'm afraid they are a small part of the entire population.
The terrible aspect about this is that while they are manipulated and uninformed, other peoples around the world are suffering a lot from their acts. They know it. And they won't forget it easily. Think about this: you are a little innocent girl who is sleeping in your bed, when you suddenly wake up and realize that there are soldiers inside your home speaking things you don't understand. You don't see anything but you hear screams from your mother. You are pointed with guns inside your own house and they take your father away from you. At the same moment, a bomb 'accidentally' falls and explodes in the middle of a wedding. You grow up. I'm sure I'll love those men who dida that to you and your country. The sad thing is that I didn't invented anything here. These are two stories taken from thousands of stories we won't listen. If in the future that little girl goes into a mall in your city wearing a bomb (of course, this wouldn't be right) are you going to say that this was totally unpredicted and unjustified?
In short, what I think is that a lot of hate is going through the world today, and this hate is seeding even more hate. This is terribly dangerous. No society can be built if the world is into a continuos state of war. Someone must stop and break the chain. The end doesn't justify the means.

Liandro,

I would disagree with your use of the word 'assassinate' in relation to the Brazilian man who was shot dead by police. Assassinate means to deliberately kill with a motive, usually political or religious. The police believed they were preventing another bomb attack, and this is not an assassination.

We may never understand why he behaved the way he did, and it could have been blind panic which would be a terrible tragedy, but the fact is that he was a white male (Brazilians do come in a white variety you know, so all the resulting accusations of police rasicm rather fall flat here), who has lived in London for three years and spoke good English.  Therefore he understood that our police are not the same as Brazilian police (where you might well want to do a runner if challenged by them) and he understood what they were shouting.  He was told to stop.  He chose to run away - forcing entry into a tube station, and running on to a train in a city which has been suffering suicide bomb attacks on tube trains.  He knew they were armed police. They had a split second to decide whether to shoot him or risk his blowing up the train.

Why did he run?  A mystery all right, but not an assassination.

The killing of any person is horrible. Why was the house he lived in searched the day before? Why was he followed? Why did he run off when challenged by the police?. Too many unanswered questions. We shall never really know the times are dangerous and the police have to be secretive.

I Think that sometimes it's family itself to grow upe their children is such an ambient: I mean that for a lot of people that do those terrible things, it's almost an honour to die "for the cause". Most of the times, they are grown up in this thought and this is more terrible!