It means joining or making a group, then working with that group to advance common goals. A lot of the specifics depend on your opinions (which political party, if any, to join, whether adventurism is okay, etc.), but unionization for example is generally a kind of organizing that most people support.
Striking and fighting are just a very small part of that, a lot if it is about getting other people to join your group, or somehow convincing people that you are in the right (or, bleh, electoralism (hecking DSA)).
It means joining or making a group, then working with that group to advance common goals. A lot of the specifics depend on your opinions (which political party, if any, to join, whether adventurism is okay, etc.), but unionization for example is generally a kind of organizing that most people support.
Striking and fighting are just a very small part of that, a lot if it is about getting other people to join your group, or somehow convincing people that you are in the right (or, bleh, electoralism (hecking DSA)).