Idolatrous practices lead to Prejudices, their Most insidious and degrading form is Belief and Practice of Organized Caste System, whereby a class of people are treated as Superior Ones and a class of people are treated as inferior, heathen and unworthy of higher status in society and are the condemned people. God's Light equally pervades all and all are created as equal.
The Gurus worked for upliftment of the fallen people and made extreme sacrifices. How can a Hindu, who believes in Caste System, can love any one who is not of Superior Caste Hindu or in that matter Love God and can ever attain salvation?