Jardine, Suse,
The attacker was rational, his speech makes sense, it's up to the viewer to decide whether they agree with him or not.
I'm a Nationalist, I want Muslims to live peacefully in their own societies and I want us to live in ours, so I agree with Jardine, joining the military or a Jiahdi group for that matter is as always a bad choice:
http://www.youtube.com/watch?v=tjT6B6IFUU8

I need to be told why this is considered a terrorist act.

It was not against civilians which the London bus bombings were, it was not even against a military target where civilians were inadvertently harmed. This was directed at a serving member of the military without 'collateral damage'.

To condemn the act, as I most certainly do, one must also be capable of condemning in the same manner the drones strikes that claim the lives of enemy while they sleep with their families, or visit a funeral, or a school. Time and time again certain posters here have shown themselves incapable of doing so. It is up to them to make their case.

You are right csteele, I didn't see this as a 'terrorist act' either.
I saw it for what it was.
A heinous murder.
It wasn't even a military clash either, given that neither the perpetrators nor the victim were engaged in activities of war at the time.

Why is it that it is only when Muslims kill anyone else lately, that it is called a terrorist act?

Jay states that "...I want Muslims to live peacefully in their own societies and I want us to live in ours..."
Who is 'us' Jay?

Jardine K. Jardine Quote "They are not serving the country. They are serving the State." I believe you are wrong they are serving the almighty DOLLAR or big business, oil interests etc.

What happened was wrong but don't forget the video of the American gunship killing innocent people released by wiki leaks, $10 says they were never prosecuted.

One persons freedom fighter is another persons terrorist.

csteele "I need to be told why this is considered a terrorist act."

Because the killers made their *political* motivations clear, demanding passersby film them to make an impact on the wider community.
It wasn't a thrill killing or crime of passion.

This was not a combat situation. They couldn't even know the man was a soldier.
He wasn't in uniform. He was just wearing a charity top that any member of the public can buy.

If they want to fight the soldiers, do a David Hicks and go join the other side.

Should we really keep calm and carry on, as the authorities suggest?
This is no "isolated incident", just the latest in a long list of atrocities.

I need to be told why this isn't considered a racially motivated crime.
Would they have attacked a Black man in the same top?

Are our laws and values, belief in freedom of speech, and with in the law to protest working against us?
Belly,
You've got a hole in one there. A most definite YES ! In fact we are our own worst enemies by mollycoddling our enemies and, yes that includes ourselves.
I have never nor will I ever subscribe to academic law & policy making. We now cop the result of academia's influence over the past 5 decades & it's no good. Shame that too many are simply too stupid to see it.