"Military uniforms and guns in the street are not a common or welcome British experience."

This is the Britain that can be found across the English channel from France that we're talking about, right? Well....you may be half right (that they're not welcome) but I might dispute that also. 

I think anyone with a passing knowledge of British history would argue that military uniforms and guns have been a very common British experience. 

As for May's reaction, it surely isn't intended only for Britons. It also serves to reinforce in the minds of cretins the futility of bombing their way to heaven.