The police is investigating the case and suspects the assault as a 'hate crime'.
School of International and Public Affairs professor, Prabhjot Singh was assaulted on Saturday night while he was taking a walk.
"There were about 20 of them. A few surrounded me, and started punching me," Singh was quoted as saying by CNN.
"He suffered injuries to his face, including displaced teeth and a possible fracture in his lower jaw, as well as severe bruising and a small puncture on his elbow. Singh was treated and released from Mount Sinai hospital," CNN reported.
Program Director of the Sikh Coalition Amardeep Singh told media that the coalition regularly received reports that Sikh school children are called 'Bin Laden' or 'terrorist' by classmates and sometimes endure physical violence.
Singh also voiced his opinion on the issue and co-wrote a 2012 op-ed for The New York Times, saying "the legacy of anti-Sikh violence and its contemporary prevalence make it painfully obvious that anti-Sikh violence is often purposeful and targeted."
He urged the US government to start tracking hate violence against Sikhs specifically instead of categorising the incidents as anti-Islamic hate crimes like the FBI generally does.
--IBNS (Posted on 23-09-2013)