The consequences of this action hurt the people in the poster who had lost a father and husband and it was clearly wrong of the protestor to do this, so he / she was right to apologise. However, I have a great deal of sympathy with the anger of the protestor. Blair seems to be continually rewarded for his war crimes and, although less likely now, was in the running to become president of Europe.
Furthermore, I walked past a British legion stall last week, and in bold letters was "1914: THE GLORIOUS WAR". There is nothing glorious about war, and especially not that one. It is time for a new message, one that honours and respects the dead, but one that says going to war is almost always wrong.
The White Poppy movement has been around for 75 years and surprisingly few people have heard of it. I've been wearing white poppies for a few years now and I would encourage others to do so. My daughter told me that a couple of the teenagers at last week's historic UK Youth Parliament in the House of Commons turned up in White Poppies - superb stuff (n.b. watch the debates on iPlayer).