By Michelle Malkin • August 26, 2008 04:41 PM I noted this morning that the Obama campaign’s Chicago-style thug effort to shut down the independent ad on Bill Ayers is part of the larger effort to intimidate conservative donors and curtail the free speech of The One’s critics.It’s getting uglier, people. Obama’s lawyer has sent a second letter to the Justice Department calling for the head of Dallas billionare Harold Simmons, who funded the Ayers ad that the Obama campaign doesn’t want the public to see.Feel the chill: Obama general counsel Bob Bauer today sent a second, sharper letter to the Justice...