Punjabis
The main language of the Punjabi people is Punjabi and its associated dialects, which differ depending on the region of Punjab the speaker is from; there are notable differences in the Lahnda languages, spoken in the Pakistani Punjab. In the Pakistani Punjab, the vast majority still speak Punjabi, even though the language has no governmental support. In the Indian Punjab, most people speak Punjabi. English is sometimes used, and older people who lived in the undivided Punjab may be able to speak and write in Urdu. The Punjabi languages have always absorbed numerous loanwords from surrounding areas and provinces (and from English).
Punjabi Language Movement
The Punjabi Language Movement (PLM) is a linguistic movement in Punjab, Pakistan aimed at reviving the Punjabi language, art, culture and literature in Pakistan. The Punjabi people constitute the largest ethnic group in Pakistan though Urdu is the national language and unlike Indian Punjab (where reading/writing Punjabi language is compulsory at every level from 2008 alongside a special Punjabi University at Patiala), Punjabi itself does not have an official status. 
The PLM's ideologies are based on Punjabi nationalism.