This week's anti-Israeli terrorist attacks seemed particularly chilling to Americans since they occurred on Thanksgiving, the most communal of our holidays.
The walls of the mosque are plastered with slogans calling for "holy war" and with posters carrying vivid drawings of anti-Israeli attacks.
Hezbollah, which spearheads anti-Israeli attacks in south Lebanon, also vowed to step up its operations against Israel.
He said he feared that mounting suspicions of Israel and its new Government could spill over into public protests and anti-Israeli attacks.
The suspect was detained several days ago, a few weeks after arriving from the United States, and is being questioned about involvement in anti-Israeli attacks, a defense official said.
In East Jerusalem, two security guards in front of a social welfare office were shot at close range in an apparent anti-Israeli attack.
In past weeks Israeli forces have carried out a series of assassinations of Palestinians militants and local leaders deemed to have been involved in anti-Israeli attacks.
The Israeli argument is that this is a necessary tactic to deal with people accused of inciting anti-Israeli attacks.
The plan required that Palestinian police take over from withdrawing Israeli forces and stop any anti-Israeli militant attacks.
But on Friday Hamas quit talks on halting anti-Israeli attacks.