Ya I know a bit. The initial target of the agitation was the Hindu Bengali community in Assam. Then the Assamese used to freely talk about becoming independent from India. The talk was 'we will supply oil to other countries and they will give us whatwever we need'. So the agitation was clearly anti-national. This was later cleverly concealed and it was projected as if its against the Bangladeshis. In the final phase, the movement gave birth to terrorists who kill Hindi-speaking Indians for ISI and are based in Bangladesh. The Assamese never had the guts to oppose the Bangladeshis as a section among the Assamese were against it. Moreover 'secular' political parties such as Congress & CPM opposed it.
Assamese people in general are anti-bengali as they cannot compete with Bengalis anywhere in India. So they wanted to ensure that they at least win in their 'homeland'. The net result is you see numerous Assamese people working as security guards and helpers in the metros today. This has happened because there are no economic opportunities in Assam at present as the agitation has ensured that the entreprising and capable people, primarily the Bengalis and Marwaris, have left the state and the Assamese are unable to fill this void.
Irony is Raj Thackrey is taking the same route in Maharashtra now. Will the result be the same? Very possible.