Really? Well, I live in Pakistan and I have yet to see any Sikh living second class life in Pakistan. Talking specifically about Lahore, the city has been historically a home to followers of Sikhism. When you visit old city Lahore, you'll find how much population of Sikhs is living in that area. They have work there. Then we have some big Gurduwaras in here. I have some Sikh fellows who come to the same gym as me, I have studied alongside a Sikh student in the same college some time ago.
We have Sikhs in Pakistan Army as well.
Next time, before trying to act so authoritative, kindly know the facts about the country you're talking about. Especially when it's Pakistan.