As far as we are awere, we do not know of any website gathering this information for every country.
You have to refer to your local authority and ask them about possible actions, and you can surely find civil organizations specialized on the matter in your country.
Here are a few links to get you started on the topic, and check the activist section on our resources page
https://www.wikihow.com/Protest
https://www.wikihow.com/Peacefully-Protest