- PR expert says United bungled apology for forcibly removing passenger
- Says Sean Spicer broke "cardinal rule" of PR by comparing Syria's Assad to Hitler
- Advises Bill O'Reilly to own up to mistakes and apologize
(CNN)What do United Airlines, White House Press Secretary Sean Spicer and Fox News host Bill O'Reilly have in common? They all bungled responses to public relations crises this week, says Lanny Davis, a lawyer and crisis management specialist.