▁health , ▁primarily ▁for ▁working - class ▁MS M ▁who ▁visit ▁public ▁cru ising ▁sp ots . ▁ ▁There ▁are ▁currently ▁over ▁ 1 5 ▁groups ▁in ▁Chen na i ▁that ▁work ▁on ▁L GB T Q IA + ▁issues . ▁Most ▁of ▁them ▁are ▁community - run ▁initi atives , ▁and ▁some ▁are ▁N GO s . ▁ ▁Most ▁of ▁these ▁groups ▁are ▁part ▁of ▁the ▁inform al ▁Chen na i ▁Rain bow ▁Co al ition , ▁formed ▁in ▁ 2 0 0 9 , ▁to ▁joint ly ▁work ▁towards ▁visibility ▁and ▁advoc acy . ▁The ▁group ▁was ▁expanded ▁in ▁ 2 0 1 4 ▁to ▁const itute ▁the ▁T amil ▁N adu ▁Rain bow ▁Co al ition , ▁with ▁membership ▁from ▁groups ▁around ▁the ▁state . ▁ ▁Other ▁progress ive ▁groups ▁such ▁as ▁N ir mu k ta ▁( Ch en na i ▁Free ▁Think ers ), ▁Pra j ny a , ▁the ▁Save ▁T amil s ▁movement , ▁and ▁the ▁T amil ▁N adu ▁Progress ive ▁Writ ers ▁Association ▁are ▁also ▁strong ▁supp or ters ▁of ▁gender / sex ual ity ▁rights . ▁ ▁Research ▁ ▁Chen na i ▁has ▁two ▁research ▁instit utes ▁that ▁partner ▁with ▁community ▁groups ▁to ▁conduct ▁social ▁science ▁and ▁bi omed ical ▁research ▁on ▁L GB T Q IA + ▁issues . ▁The ▁Centre ▁for ▁Sex ual ity ▁and ▁Health ▁Research ▁and ▁Policy ▁has ▁published ▁extens ively ▁on ▁issues ▁such ▁as ▁st igma ▁and ▁disc rim ination ▁faced ▁within ▁the ▁health care ▁system ▁by ▁MS