The Krsna consciousness movement is teaching this higher knowledge of retiring from materialistic life to return to Godhead, but unfortunately many parents are not very satisfied with this movement. Aside from the parents of our students, many businessmen are also dissatisfied because we teach our students to abandon intoxication, meat-eating, illicit sex and gambling. If the Krsna consciousness movement spreads, the so-called businessmen will have to close their slaughterhouses, breweries and cigarette factories. Therefore they are also very much afraid. However, we have no alternative than to teach our disciples to free themselves from materialistic life. We must instruct them in the opposite of material life to save them from the repetition of birth and death.

From Srila Prabhupada's purport to SB 6.5.20