“It’s a new escalation,” Uri Kaufmann, the director of the Jewish cultural center now run in the building, said earlier this year as he pointed out the damage from the November attack. “But shoot the building — this is really shocking.” The alleged orchestrator, according to five German security officials and two Western intelligence officials, was Ramin Yektaparast: a muscled Hells Angels leader wanted in the case of a gruesome biker gang murder in Germany.