Islam came to subcontinent through a prayer of Prophet Mohammed peace be upon him: When Prophet Mohammed peace be upon him was stoned in Taif for his call toward truth, and he was bleeding profusely, even his shoes filled with his blood. He did not despair and give up on those who stoned him. Later the Angel of mountains asked him, if he wished the whole Taif would be crushed between mountains for stoning a Prophet. Prophet Mohammed peace be upon him refused and made supplication for their guidance and confidently prayed for their children to receive the light of Islam.
After years, in 93 Hijri, the 17 years old Hero - Mohammed bin Qasim, who came to liberate India with 4000 -10000 army was from the children of Taif.
So never give up on people and become judgmental, rather look at the brighter side and hope for the best.