Because normal physical actions are a sin to these crazies.
Via Catholic Online:
ISIS’ all female police force, the al-Khansaa Brigade, brutally murdered a woman breastfeeding her infant in public. The unnamed woman was wearing her full-veil burqa and held her son underneath the burqa, but was still spotted.
“An ISIS policewoman took the baby, gave it to another woman, and then killed the mother,” Aisha, a former Raqqa resident now living Turkey, told the Sunday Times. The mother was ruled in violation of “public decency.”
According to ISIS-linked social media accounts, before the mother was murdered, she was mutilated.