MELBOURNE, Nov 25 (Reuters Breakingviews) - Jamie Dimon is eating crow for Thanksgiving. After initially trying to emphasise that he was just kidding in his comments read more on Tuesday about the Chinese Communist Party’s centennial, JPMorgan’s (JPM.N) boss got serious. First, he expressed regret and explained that he was focused on his bank’s “strength and longevity.” Then he followed up with a second statement read more on Wednesday that “it’s never right to joke about or denigrate any group of people” as it “can take away from constructive and thoughtful dialogue in society."Needing two cracks at defusing the situation makes clear just how serious the situation is for JPMorgan. The damage control probably isn’t finished yet either. After spending years building its presence in China, there’s a risk for the bank that Beijing takes offence and insidiously slows its progress. That makes it all the more likely that even after the U.S. holiday is over, Dimon will keep reminding President Xi Jinping just how grateful he is. (By Antony Currie) Follow @Breakingviews on TwitterCapital Calls - More concise insights on global finance: China’s data centre sale sports debatable premium read more TikTok’s China rival is coming out of obscurity read more Chinese Tesla-wannabe flaunts speed and control read more London SPAC party starts on more sober note read more JPMorgan grows its market share in risky direction read more