I'm not entirely sure specifically what 'The Red Line L2019' is about. It could be a movie, a book, or some other form of media. Without more information, it's difficult to say exactly what the true story behind it is.
One possible real - life inspiration could be a political event. In 2019, there were many political happenings around the world that could have served as inspiration.
It could be about various things. Maybe it's about a real - life event related to boundaries, like a political or territorial red line in history. For example, it could be inspired by a situation where a certain action was the limit that couldn't be crossed in international relations.
The L Word is purely fictional. It was created to present fictional characters and storylines that offer entertainment and social commentary rather than being based on real events or people.