Only recently have workers moved into the use of radio and television because only recently has access become available to whole communities rather than just business and government. We are still broadcasting, though, at the whim of owners and government. The internet, though, provides us with a unique opportunity to communicate in a relatively inexpensive and unfettered fashion. And there are millions of workers who would help if only the opportunity would avail itself. Check the Jute Workers Page to see how workers from Bangladesh can communicate with workers worldwide.
Organized workers can use the internet relatively cheaply.
Where governments or companies censor opinion it will cost more but not an excessive amount to post your information. Information can be generated by one group and published by another in more permissive societies. However, provided that internet access is available, no information can be stopped at national boundaries. Firstly, you need the use of a computer. Secondly, you need some form of internet access.