People with knowledge of Islam misinterpret about it. A man would batter his son for using his left hand to eat and drink - he was left handed. According to the father's belief it was a severe sin to do so. I know this because the son was my friend. I only wonder how many children brought in extremely religious families abuse their children in this way.
There was a civil servant GA Madani, who was the commissioner of Dhaka when East Pakistan (now Bangladesh), he was credited for building the maximum number of mosques in the city. That went to his head. When he retired he contested the 1970 elections on the Jamaat-e-Islami ticket. While canvassing he met opposition everywhere. The Pakistan People's Party was ahead. The slogan 'roti, kapra or makan' meaning bread, clothes and shelter had won people over. People told him 'We have Islam that is not what we want'. Madani was shocked, he could not believe that people were so materialistic and had rejected faith. The shock was too much for him to bear a few years later died of a heart att ack