Zachary Clark is apparently a convert to Islam. From whom did he learn Islam? Where does he go to mosque? Has that mosque’s teachings been investigated? Why not?

“Brooklyn Man Arrested for Encouraging ISIS Terrorist NYC Subway Attacks,” by Katabella Roberts, Epoch Times, November 28, 2019:

A Brooklyn man has been arrested and charged for attempting to provide material support to Islamic State, The Department of Justice announced on Nov. 27.

Zachary Clark, 40, of Brooklyn, New York, was arrested in the borough on Wednesday and was expected to appear before Magistrate Judge Robert W. Lehrburger in Manhattan federal court on the same day.

Clark was charged with one count of attempting to provide material support to ISIS, and one count of distributing information relating to explosives, destructive devices, and weapons of mass destruction, and faces up to 40 years in prison.

According to the complaint, he had previously pledged his allegiance to ISIS twice, first in July 2019, to its then-leader Abu Bakr al-Baghdadi, and then in October 2019, to ISIS’s new leader, Abu Ibrahim al-Sashemi al-Qurayshi….

Clark’s propaganda included calls for ISIS supporters to commit lone-wolf attacks in New York City, and on Aug. 3, 2019, he posted instructions about how to conduct such an attack.

The instructions included guidance on how to select a target, how to conduct preoperational surveillance and planning, and how to avoid attracting the attention of law enforcement when preparing for and conducting such an attack.

On another occasion, Clark posted a manual entitled “Knife Attacks,” which stated that discomfort at “the thought of plunging a sharp object into another person’s flesh” is “never an excuse for abandoning jihad.”

It also said that “[k]nives, though certainly not the only weapon for inflicting harm upon the kuffar [non-believers] are widely available in every land and thus readily accessible.”

According to the complaint, Clark urged the participants in encrypted chat rooms to attack specific targets and posted photos and maps of the New York City subway system, encouraging ISIS supporters to attack certain locations.

Clark posted a manual entitled “Make a bomb in the kitchen of your Mom,” which gave detailed instructions about constructing an explosive device….