If you call yourself a Muslim, I believe you must also consider yourself Jewish and Christian. The Prophet Mohammad has said that the three Abrahamic religions are essentially the same:
Abu Hurairah reported Allah's Messenger as saying, "I am the nearest of kin to Jesus, son of Mary, in this world and the next. The prophets are brothers, sons of one father by co-wives. Their mothers are different but their religion is one. There has been no prophet between us."
After the Prophet Mohammad died, non-progressive governments took over the religion and instituted practices inconsistent with the Prophet's vision. The Prophet's battle against non-progressive governments has existed from the day he received his vision. For more, see the 1976 Anthony Quinn film, The Message.
Bonus: from PBS: "Muhammad once came upon a group of Muslims arguing about which religion had primacy over all others. This was the occasion for one of the Qur'an's most often quoted revelations: 'If God had so willed, He would have made all of you one community, but he has not done so, in order that he may test you according to what he has given you; so compete in goodness. To God shall you all return, and He will tell you the truth about what you have been disputing.'" (Qur'an: 5:48.)