According to the Syrian Observatory for Human Rights, an ISIS fighter publicly executed his mother in Raqqa, Syria, because she encouraged him to leave the group. The woman said to be in her 40s, obviously worried for her son's safety warned him to leave because she feared that the US-backed coalition was going to wipe out the terror group. Not only did her son not heed her advice, he reported her to the group. Citing local sources, the Observatory said the 20-year-old man executed his mother on Wednesday near the post office building where she worked in front of hundreds of people in Raqqa, a main base of operations for the group in Syria.