To me, the most obvious thing is that is was at the Dark Knight Rises premier. I've been anticipating this film since last year on Acceleration.
Secondly, the shooter wore a gas mask and released some sort of gas (a canister of it) - GAS/G4S was something I discover just a few days ago. The mask of Bane is another thing I have been showing you - and that's associated not with just GAS but a flood or a drowning or a sinking.
Thirdly, the shooter was from Aurora and auroras are what the earth has been having a lot of since the sun has been going nuts the last year or so. Aurora actually means, "the color of dawn" (that is - the DARK NIGHT - the darkest part of the day is when dawn hits) and when I think of dawn I also think of the planet Venus. Venus is representative of Lucifer (and in the case of Venus particularly, a counterfeit Jesus, since Jesus is also known as the morning star in the Bible.)
Also worth pointing is the name of the theater:
Are we to expect a blast from the sun strong enough to create the "aurora of the century?" Enough to fry our electrical grid?