You may want to include the term "Naxalite" in your research as well. Interestingly, my dada ji was a staunch Akali supporter and my Nana Ji was a communist, so I'm the grandchild of two opposing ideologies :P

From what I know, there were two waves of communism in Punjab. The naxalites were sort of revolutionaries, not that big of a deal but they made a loud voice nonetheless about inequalities in the agrarian society of Punjab. They were repressed violently by the state, headed by the Akali Dal (religious party) at the time; ironically, a lot of the tactics used to kill Naxalite supporters, such as false encounters, would be those used against the Akalis and their supporters on a much larger scale during the 80s and 90s.

THe later wave of communism in Punjab often didn't translate to a desire for literal revolutionaries that aimed for the overthrow of the bourgeois, so much as liberal values in general. Communists were more likely to value secularism, caste-equality, etc.. They were also more likely to value Indian nationalism, which put them in a very hot-spot with the Akali Dal and later with Sikh militants. The two groups generally hated each other. For one, some Communists supported the heavy-handed actions of the government in suppressing the militants because they favored the strong nationalist government (my Nana Ji still is an apologist for Bluestar). But a lot of the Communists who simply spoke out against unnecessary bloodshed committed by Kharkus were killed by them as a result for not supporting the cause. Paash is a great example. He was a Communist poet who interestingly incorporated Guru Nanak in his thinking and advocated for people to abandon fanaticism and embrace tolerance. He was killed by militants. There are many such cases, as university professors would also killed if they didn't support the cause of the militants.