An American "freedom fighter" in Syria

"U.S. Army veteran Eric Harroun, known as 'the American,' joins group in Syria to fight against Bashar al-Assad" "A video posted online during Harroun's time in Syria shows him and Syrian rebels celebrating the takedown of a Syrian helicopter. He posted a photo on Facebook of the dead pilot's paycheck with a caption saying, "He will NOT cash this one!!!" "I hate bad guys like Bashar (al-Assad)," Harroun said. "I hate Iran, too. I am a freedom fighter." "  Can you imagine how the US government would treat an American who volunteers to fight with Hizbullah or with Palestinian resistance groups?