Bajrang Dal district convener Vivek Premi and activist Sanni were arrested yesterday for allegedly assaulting the man, said SP Vijay Bhushan.
The incident, which took place last week, led to tension in the area, police said, adding, besides the arrested duo, a case has been registered against four other persons.
Police initiated action after a video of the incident surfaced on social networking websites.
Meanwhile, the man is currently lodged in Muzaffarnagar district jail after he was arrested on the charges of theft and animal cruelty, police said.