[muawiyah]

hitler's birthday is in there somewhere.

The reality is that it's frequently the first really warm week of the year ~ and they can get out and do this stuff.

Mad bombers aren't necessarily anniversary driven, although professional mad bombers will try to hit a significant holiday or other celebratory time just to rub our noses in it.

With HSD wasting a lot of time looking over purchases of fertilizer and motor oil, the professional terrorists have to resort to more symbolic, but certainly still deadly, old fashioned black powder bombs.

[Sir Napsalot]

Not an expert, but wouldn't “old fashioned black powder” be on the radar screen, too?

Fertilizer and other stuff was used as alternative, because old fashioned black powder was heavily monitored/regulated?

[EEGator]

Hitler’s birthday is 4/20...same as International smoke weed day.