Citizenship Amendment Act is a law to fast-track citizenship of 'persecuted religious minorities' in 3 neighboring countries Afghanistan/Pakistan/Bangladesh.
It is a case of positive discrimination (affirmative action for the Americans) towards Hindu/Christian/Sikh/Buddhist/Parsi refugees.
Here is the reddit thread explaining the Act in simple language - https://old.reddit.com/r/IndiaSpeaks/comments/e9qhvb/cab_in_...
It does not affect normal citizens of India. It is also NOT a case of negative discrimination against Muslim refugees, like most detractors claim it to be. Official tweet from India's Home Ministry clarifies this - https://twitter.com/PIBHomeAffairs/status/120730412196068556.... The usual waiting period of 11 years stays as it is for them. For minority refugees, it is reduced to 5 years. That's all.
Every country has a database of its citizens. India was lagging far behind in this. Due to enormous population, porous borders and poor living conditions, there are a lot more undocumented immigrants in India than probably any other country on earth. The National Register of Citizens is an attempt to set that right.
Argument about CAB, should also include its counterpart NRC. When NRC is applied, you "exclude people" as illegal immigrants, and in CAB, you "include people" as legal, leaving out others. These laws can and will be amended as per the state's interest, which ultimately decides who to include or exclude.
The first step is to make millions of people illegal.
Next is to give all but Muslims citizenship. Muslims would be stripped off their right to vote.
Even hitler would be inspired from such evil plans.
(Also from the comments everyone can see how heartless people can be)