Animals were occasionally killed for research purposes in the Ayurvedic system. In that same system surgical operations were sometimes performed. Also some Vedic rituals prescribe animal sacrifices that involving taking the life of an animal. Kali worshippers routinely slaughter goats. Arjuna, under Krsna’s direct orders, had to kill human beings. For these reasons some people think Hare Krishnas are hypocrites because they believe in ahimsa. What’s YOUR answer? Reading Srila Prabhupada’s books thoroughly is a good way to effectively combat these sorts of arguments. Therefore, that’s one reason why reading regularly is important.