@bunnychum,
As far as I know, you are a genuine person and all your topics of writing are genuine and worth reading and considering. In this case, you are forced to do something which does not suite your norms. The reason for that is that maybe a few people have invested in the coin and now they are afraid of negativity being spread about the coin.

Same thing had happened to me earlier, few years back, when I was threatened very badly when I also had brought the 'scam reality' of a coin. It was a havoc of morality at that time. I was abused verbally in various ways and was threatened being abused physically. I had started getting all sorts of dirty and fearful messages daily from thousands of people. When I showed the Facebook messages to my police friend, even he was shocked to read them.

These people who have invested in these coins have fear of price drop down and hence they take such steps because you very well know that Indians don't know how to work hard towards making things better. Like what @pkalra has mentioned. They are just trying to pull you down with 'threatening words'.

I am writing this comment to you because I want you to remain strong in whatever your views are. In future, you may write more about various topics and then again you will receive such threatening messages, that time, please remain BOLD, FIRM and ASSURED that you won't bow down to anything and anyone.

You have complete freedom to write what you think is good and correct. If others are making you feel wrong, then don't listen to them. Listen to yourself!

I am adding one more point here. Those who send you threatening messages on Facebook, you can report their profile mentioning that you are being threatened. You have a lot of options to stop them.