Brits are made of pretty stern stuff
Most of them, anyway. They endured over 40,000 deaths during the Blitz. They endured additional casualties during years of bombing, missiles, and terrorism. As terrible as these bombings were, it was nothing compared to what they've faced in the past. As always, I'm grateful that we're on the same side.
Like you said, Livingstone's statement isn't quite up to the Churchill standard (he's a tough act to follow), but it was clear and to the point. My sympathies to those killed and wounded, and to their familes.