Donald Trump kicked off the Memorial Day holiday on Monday in what has become something of a tradition in recent years by taking aim at his political opponents on social media.The president began posting on his Truth Social platform at 6:10 a.m., slamming critics of a potential deal with Iran to end the war he launched in February as “losers.”Truth SocialEight minutes later, at 6:18 a.m., Trump offered a “Happy Memorial Day” message, including to whom he called the “Dumocrats,” his latest nickname for Democrats, who he claimed, “disrespect our Military and all of the tremendous success that it has had over the last year.”“God Bless those that have made the ultimate sacrifice. I love you all!” added Trump, whose military strikes on Iran have killed 13 U.S. troops.Truth SocialHe then returned to the attack with another post at 6:26 a.m., again targeting “Dumocrats.”Truth SocialLast year, Trump marked Memorial Day with a message slamming Democrats as “scum” and federal judges as “monsters.”