A group of 600 karate students on Sunday lined up in the city for an awareness rally against substance abuse. The event was organised with the support of a prominent martial arts training academy. Thottathil Raveendran, MLA, opened the programme. The students also took part in a mass awareness class against drug abuse. District Sports Council president O. Rajagopal, Vimukti District Mission Coordinator E. Priya and senior trainers from various martial art institutes were present.