Evidence is mounting that it might be safe at last for Hollywood’s patriots to step out of the closet and show some support for President Bush and an impending war with Iraq. “Law & Order” actor Fred Thompson has cut a television commercial where he extols, “Thank goodness we have a president with the courage to protect our country.” Thompson’s ad is in response to an ad from Martin Sheen, the pretend president on NBC’s “The West Wing,” who scolded in his commercial, “Don’t invade Iraq. Inspections work. War won’t.” Thompson’s ad is an effort from the grassroots organization Citizens...