[Michael.SF.]

Farook had a series of arguments with a Jewish fellow named Nicholas Thalasinos.

I do not think Thalasinos is Jewish. I do not know this website, so cannot confirm authenticity:

Five things to know about Nicholas Thalasinos

Do you have a source that confirms he is Jewish?

This is important because if he is Jewish that fits the anti-Jewish hate of the radical islamists. However if the above website is correct, it appears Thalosanos is far more 'evil' then just being a Jew, he is ........... God forbid....................CONSERVATIVE!!!!!!!!

[jjotto]

Nicholas Thalasinos and his wife are self-described ‘Messianic Jews’, but they do not seem to have actually been Jewish. That’s not unusual for ‘Messianic Jews’. Of course, the question is whether the jihadis thought he was a Jew.

[jjotto]

Not Jewish. Greek Orthodox mixed up in a cult.

http://usa.greekreporter.com/2015/12/03/greek-american-nicholas-thalasinos-among-the-dead-at-san-bernardino-shooting/

[trisham]

http://www.ibtimes.com/who-nicholas-thalasinos-san-bernardino-shooting-victim-was-outspoken-messianic-jew-2210477