A blockade is criminal behavior. An angry mob does not have the right to surround your house and prevent people from entering or leaving. Such activity does not qualify as "peaceful". Trespass (which Rao was engaged in) is also criminal behavior, as is rioting, destruction of property, etc.
That isn't true even in the US. I suggest you go and read on wiki about strike action which includes this helpful paragraph:
A strike may consist of workers refusing to attend work or picketing outside the workplace to prevent or dissuade people from working in their place or conducting business with their employer. Less frequently workers may occupy the workplace, but refuse either to do their jobs or to leave. This is known as a sit-down strike.
And perhaps you can then go to the article on picketing, which is exactly what these guys were doing.
A strike may consist of workers refusing to attend work or picketing outside the workplace to prevent or dissuade...
If the non-workers prevent others from conducting business with their employer, it's a blockade, and it's illegal. If they merely persuade, it's a picket, and legal.
In both the US and India, you do not have the right to use violence against the competition. It's illegal if you prevent people from entering a factory and undercutting you, it's illegal if you sabotage the trucks of your competitors, etc.
I just read through that India Together article. Very interesting, but it doesn't support your position at all:
"The Rangarajan case simply ignores statutory provisions in the Industrial Disputes Act, 1947 and the Trade Unions Act, 1926, and an equal number of case laws laid down by larger benches that have recognized the right to strike. It also fails to consider International Covenants that pave the way for this right as a basic tenet of international labour standards."
and
"In B.R. Singh v. Union of India (v), Justice Ahmadi opined that "The Trade Unions with sufficient membership strength are able to bargain more effectively with the management than individual workmen. The bargaining strength would be considerably reduced if it is not permitted to demonstrate by adopting agitational methods such as 'work to rule', 'go-slow', 'absenteeism', 'sit-down strike', and 'strike'. This has been recognized by almost all democratic countries"."
People's rights are not won by chatting on the internet. Check out this for stuff that happens in industrialized nations when people are pressed to hard
Well? He is. A blockade is apparently "criminal behaviour", but police beating the blockaders with clubs until at least twenty of them are hospitalised and one of them dies gets a "How do you know the union leader was killed unnecessarily?"
http://expressbuzz.com/states/andhrapradesh/Workers-kill-Reg...
You may be right that the police used excessive force, but you've presented no evidence of it. However, some force was clearly required.