Twitter users are slamming Prince Harry on social media and claim he wasn't singing the national anthem during a moment at the Queen's funeral at Westminster Abbey in London..On Monday, hundreds of millions watched around the world as the funeral service was held for Queen Elizabeth II, the longest reigning monarch in modern times. However, eagle-eyed royal fans were quick to notice Prince Harry was "tight-lipped" during the national anthem.. Prince Harry singing at Queens funeral ."Prince Harry not singing the national anthem tells us all we need to know, he couldn't even do it for his Gran, have a good life overseas Harry, your time here is done," one Twitter user said.."Live images from the event seemed to show Prince Harry with his mouth just slightly ajar while God Save The King was being sung, as he stood directly behind his father King Charles III," the Daily Mail in the UK reported..it is unclear if the prince was overcome with emotion that prevented him from singing.."People whining prince Harry wasn't singing. He was crying. That's a very normal reaction. You can't sing and cry at the same time. What a*sholes trying to throw inhumane allegations about not singing," one Twitter user said.."Anybody else notice #PrinceHarry not singing #nationalanthem very disrespectful," another Twitter user said..Twitter exploded with commentary and said he was actively disrespecting his family..One user took the time to crack a joke at the prince's expense.."Some said the lyrics had changed from 'God Save The Queen' to 'God Save The King' and Harry was having trouble learning the new word," a Twitter user posted..Although Twitter comments seemed to be mean in nature, some people claimed social media users were being too harsh on Harry.."To be fair it seems like his lips are moving but very slightly," a Harry Twitter supporter said.