Can political or civil society organisations exist without access to social media platforms these days? No. These platforms are utilities of the modern democratic and pluralistic society.
Because this is well established fact. You can research the topic for yourself if you wish. Just a quick Googling: [1]
Social media have been key to political campaigning in the last 10 years or so. This made headlines in relations to the Brexit referendum in the UK and it had made headlines after Obama's first presidential campaign which was a pioneer.