Why were they attacked in the first place?
The incident happened around 2 months back.
https://www.thequint.com/india/2017/05/25/viral-video-sikh-men-beaten-up
However, according to Jasbir Singh, the chairman of the State Minorities Commission, three to four sewadars (Sikh members) of a gurdwara from Alwar district had visited the village to collect donation, when the local residents had beaten them up alleging that they molested their women.
The Quint couldn’t independently verify the authenticity of the video. However, Rajendra Singh, Superintendent of Police (SP), Ajmer, confirmed that a complaint has been registered.
This incident was reported around a month and a half ago. A complaint was filed by the villagers at Nasirabad Sadar police station. Nasirabad police investigated the matter and completed all formalities as per law.Rajendra Singh, SP, Ajmer
Meanwhile, speaking to PTI, Jasbir Singh said:
The matter has come to my notice. The location was unidentified. In fact, I got a vehicle number traced and found that the incident happened somewhere in Ajmer. I have asked the Ajmer police administration to check the matter. A factual report has been sought within 10 days.
He added that appropriate action will taken upon receiving the report.
Earlier, four members from the mob were arrested under IPC section 151 (knowingly joining or continuing in assembly of five or more persons after it has been commanded to disperse).
However, according to police, the Sikh men were not found involved in molestation, and were asked to file a cross FIR against those who thrashed them. They apparently did not do so.
The four accused have now been released on bail.