Lewis kept a low political profile for many years, having taken advice reportedly given to him by President John F. Kennedy, who told him "Don't get into anything political. Don't do that because they will usurp your energy". Nevertheless, he campaigned and performed on behalf of both JFK and Robert F. Kennedy. Lewis was a supporter of the Civil Rights Movement. For his 1957 NBC special, Lewis held his ground when southern affiliates objected to his stated friendship with Sammy Davis Jr.  In a 1971 Movie Mirror magazine article, Lewis came out against the Vietnam War, when his son, Gary, returned from service traumatized. He vowed to leave the country rather than send another of his sons.  Lewis once stated political speeches should not be at the Oscars. "I think we are the most dedicated industry in the world. And I think that we have to present ourselves that night as hard-working, caring and important people to the industry. We need to get more self-respect as an industry". In a 2004 interview with The Guardian, Lewis was asked what he was least proud of, to which he answered, "Politics". Not his politics, but the world's politics - the madness, the destruction, the general lack of respect. He lamented citizens' lack of pride in their country, stating, "President Bush is my president. I will not say anything negative about the president of the United States. I don't do that. And I don't allow my children to do that. Likewise when I come to England don't you do any jokes about 'Mum' to me. That is the Queen of England, you moron." "Do you know how tough a job it is to be the Queen of England?"  In a December 2015 interview on EWTN's World Over with Raymond Arroyo, Lewis expressed opposition to the United States letting in Syrian refugees, saying "No one has worked harder for the human condition than I have, but they're not part of the human condition if 11 guys in that group of 10,000 are ISIS. How can I take that chance?" In the same interview, he criticized President Barack Obama for not being prepared for ISIS, while expressing support for Donald Trump, saying he would make a good president because he was a good "showman". He also added that he admired Ronald Reagan's presidency.

Answer this question "Why did he feel that way?" by extracting the answer from the text above.
his son, Gary, returned from service traumatized.