As long as you don't count "Canadian" Sikhs murdering 329 people on board that flight out of Toronto.
Overall, Sikhs have relatively low crime rates, low rates of reliance on public assistance, high educational attainment, high income, high net worth, and high business formation rates; as compared with other immigrant groups.
The incident that you mention was a very specific and exceptional circumstance - not the kind of wide-ranging jihad like we see in islam.
It was directed against the Indian Government (an Air India flight), in retaliation for the Indian Government’s 1984 Operation Blue Star - where the Indian Army invaded the holiest site of the Sikh religion (the Golden Temple in Amritsar) and killed thousands.
Those turbulent times are over. The pro-communist Indira Ghandi who ordered the massacre is dead (gunned down by her Sikh bodyguards), and the sectarian tensions between Hindus and Sikhs has basically healed. India even had a Sikh (Manmohan Singh) as its Prime Minister from 2004 to 2014.
I thought this thread is about Hindu’s, not Sikh’s. Diwali is strictly a Hindu religious festival. Just like Christmas is strictly a Christian thing. That does not stop people of other faiths celebrating Christmas and joining Christians. It does not mean they are giving up their own faith by observing Christmas rituals such as exchanging gifts and placing lights around their homes.