Forcing left-handed children to write with their right hands is not in any way innocuous or helpful- it is actually harmful to their developing brains and can result in dyslexia, stuttering and other learning or speech disorders.
Most languages have a bias against left-handed people. Left is derived from ‘lyft’, meaning weak. In Dutch, ‘Link’ means cunning. In German, ‘link’ means questionable. In Mandarin, it’s zuô, meaning improper, and in Turkish the word for left is sol, which can mean both ‘die’ and ‘ill’.