Dont know about your knowledge of history but the entire strugglle of the Maratha king Shivaji and then the Peshawas was to oppose the atrocities of Muslim empire of Aurangzeb and the kingdoms of Kutubshah,Nizam and Adlishah.
History clearly has it on record that every single time the Muslim army invaded they destroyed temples and forcibly converted people, including the son of Shivaji ie Sambhaji who was tortured and killed because he refused conversion.
We dont blame all Muslims/Islam for this but the fact is very often Muslim rulers interpreted forcible converion as good cause of Islam and did it with a single minded agenda.
Even the sikh guru was tortured and murdered by Aurangzeb. The sikh panth was formed to protect the mass Hindus from Islamic attackers. Hindukush means graveyard of Hindus who were killed during the initial invasion. Surti somnath temple was looted 17 times by such an invader, many people were killed during such invasions.
History cannot be denied but there is an understanding that such cruelties were more arising out of power hungry despots using Islam as a tool for their conquests.
In fact my personal opinion is that Islam was hijacked during the times of Muhammed when his "followers" realised the potential of a new faith to help their personal greed.