Chabad-Lubavitch is a branch of Hasidism. During its nearly 300-year history, a number of controversies, though mostly unrelated to one another, have arisen. Some incidents have centered on religious beliefs and practices of the Chabad movement and the reaction of other Orthodox Jewish communities. Criticisms of Chabad have occurred throughout the movement's history where religious leaders from other Jewish groups opposed Chabad positions on religious, social and political matters.