At some point one has to come up with a rational explanation as to why we are adversarial ethnic based cultures in the same social space and over two centuries are coming to a close and we have not build up a summoning creed that can categorize us as a people from a nation state sharing some common symbols and national identity.
My opinion - the indian is inherently racist for whatever reason (vestiges of the caste system, religious, or other). This will explain your cobras, basemans, brahmin susie etc. Of course this does not apply to all indians, in my own experience I find christian and muslim indians to be more tolerant.
I do not think the majority of indo guyanese are interested in a national identity, they see it as a denial of their indian roots and culture. Again - my honest opinion only and I welcome the barbs and arrows coming my way from the indo kkk.