Hindu-Muslim harmony was good in most parts of the Indian subcontinent. Although there have been some riots in some areas recently or before. But to be honest, there is no place for militancy in the Muslim religion. Muslim is a religion of peace. As far as I know, no religion supports it. Many of our Muslims also go to Hindu religious festivals here. However, in the Muslim religion, there is a provision for slaughtering animals, but slaughtering is not cruelty.
Yes, every religion promotes piece at its core - its the people who pollute the values.