After the British left India, Sikhs were fired from their jobs and Hindus were hired. Then Indian constitution was written but Sikhs refused to sign it in the house of parliament  because under Amendment (Dhara) 25 it declared Sikhism as part of Hinduism. When Sikhs talked to Nehru about their rights, he said "The time has changed now. If you wanted to live freely then why didn't you demand for a separate country from British?" Look at some more quotes that explain the real attitude of Hindus towards Sikhs.
" To preserve the unity of India, if we have to eradicate 2-kror [ 20 millions ] Sikhs, we will do so. (Balram Jhakhar, a colleague of P.V. Narsimharao, the former Indian Prime Minister)
" The Sikhs are a lawless people and a menace to the law abiding Hindus ... The [Government] should take strict measures against them." (Pandit Nehru, Indian Prime Minister, on Sikhs)
"Kya main taqat dushman (the enemy -the Sikhs) ke haath main de dun (How can I entrust power into the hands of the enemies)." (Jawahar Lal Nehru, 1961)
 
 " I hate the very physique of a Sikh because of the turban and beard. " (Vallabh Bhai Patel, late Indian top politician)
"I don't give a damn if the Golden Temple and whole of Amritsar are destroyed, I want Bhindranwale dead." (Indira Gandhi, Indian Prime Minister, communicating with Gen. Vaidya during "Operation Blue Star")
"We have broken the back of the Sikhs and we will get them elsewhere." (M. M. K. Wali, Indian Foreign Secretary, June 7, 1984, Canadian Broadcasting Corporation, Radio 740, As It Happens)
"Let us teach these bastards (the Sikhs) a lesson." (Rajiv Gandhi, October 31, 1984)
"... a threat to the villagers that all males would be killed and their women taken to army camps to breed a new race if there was any militant activity in their village." (Brig. R. P. Sinha, Indian Army, March 8, 1991)
"You do not know the might of our armed forces. We will eliminate 10,000 Sikh youths and the world will know nothing about it." (Chander Shekhar, former Prime Minister of India, CK, 21st October, 1991)

Punjab ll be happy with india eh v ik sikh da faisla si Master  TAARA SINGH da so veer ji khalistan banaon ya na banoan naal koi fark ni painda jad tak sikh sab kush sikh ni jaande anyway aminu te punjab naal pyar aih uh mera ghar ai baaki jo jo punjab wal buri nazar karnge time to time uhna nu sabak milda rahuga uh chahe koi hindu howe muslim ya sikh........ mera wasda rahe punjab

baaki ik gall hor khalistan ena saukha ni bann jaana 1947 waala santap bhogna paina dubara punjabi ya sikh kale punjab ch hi ni poore india ch baithe jina nu than than wadiya jaweiga uhna ki karni edan di azadi...
jo pakistaan wale uzade c azadi uhna de kis kamm di edan hi fir howega punjab ch hindu wade jaange te bahar india ch sikh fir ki karni ai edan di azadi dosto jithe lakhan dheeyan bhaina di izat jaani ai lokan ne chuk chuk lai jaana gharan tonh ki karn ge uh bewass sikh kade eh sochiya kise ne ajj saanu izat piyari ai udon nahi howegi
jo pakistan ch hoya c dilhi ch hoya c ik waar fir sade sikhan naal howei kine lok chaunde uh eh sab koi ni chaunda better eh hai ke apne rights layi pailan te BADAL warge Amrinder warge sab netaawaan nu khatam kariye punjab waise hi king bann jaana kise azadi di lod ni raini ... baaki tuhadi marzi dosto