Explosion at synagogue in the US and upcoming Nazi rally

The Chabad Lubavitch Synagogue in Santa Monica, California suffered an explosion which, intially thought to be an accident, has been linked to Ron Hirsch, a 60-year-old who was known to frequent synagogues and seek charity from them and other Jewish organisations in the area. No motive has yet been established. The ADL sent out a warning, though toning it mildly to say that there is no evidence of this being a hate crime.
Hirsch, who uses the aka Israel Fisher, is being sought by the FBI, the LAPD and the Santa Monica PD.
Here on the East Coast there will be a National Socialist Movement in Trenton, New Jersey on 15-16 April, partly in celebration of Hitler's birthday. Violence, however, is not expected from this group, though their rallies are usually attended with angry counter demonstrations. This year the address of a NSM leader was posted to the web by a small, California based anti-racist oganisation.
It's that time of the year...best to be a bit careful.