Yagam (1980)

The sentimental melodrama, allegedly critiquing the extreme-left CPI(ML), has the middle-class namboodiri hero Unni join a political group committed to violent struggle. He abandons his studies, slavishly obeys the group’s leaders and kills a fellow activist as well as a religiously inclined local landlord. Moving to Madurai, he falls in love with Kannamma, the daughter of a factory worker. In the end, following Party instructions, he blows up a train but discovers too late that one of the victims is Kannamma’s father.