In crappy Morgan Freeman movies, there’s no motivation, just the slenderest of pretexts so that everyone can get on with enjoying the explosions unencumbered by anything real. During the Second World War, Hollywood made films about battling the Germans. During the Cold War, they made films about the Russians. But today? They make films about …nothing. I found the trailer offensive, not because it too obviously echoed last night’s news, but because its iconic destruction isn’t rooted in anything.