re: #1 jaunte

This is probably an example of Islamic terrorism. The targeting of civilians at a random crowded public event and the use of the same IED strategies used in ME attacks leans me in this direction.(1 device detinated followed by mutliple secondaries to inflict more panic/casualties)

Right wing terrorists generally attack political targets
Tim Mcveigh his the federal building and The Noregian mass killer targeted a childrens camp for the politcally left.

Anarchists target symbols of establishment and tend to call in there attacks to avoid casualties

Communist radical(dont really exist anymore) also tended to target symbols of capitalist wealth.

Its not in good taste to label all muslims as being reasponsible for terroist organizations using the quran for ligitmacy but its also not in good taste to remain intellectually stupid for the sake of political correctness. These attacks follow patterns based on the ideology of the group carrying out the attacks. These attacks dont fit the behavioral motif’s of any other established terrorist movements that target the US.

Of course there is always the possibility im wrong;) Anomolies do happen