No ... the judge is correct ... you cannot sue a nebulous movement. However, you can sue a person or persons ... or an organization that has been created under the law and registered with the state. Therefore, if a mooslim commits a terrorist act against you ... you cannot sue islam ... but, you can sue the perp, Moohamed Beengoathumpin Ali Baba.
The essential American soul is hard, isolate, stoic, and a killer. It has never yet melted. ~ D.H. Lawrence