**7.39pm** It wasn't a real filibuster. He spoke for about eight hours. I've added a video of the start and end of the marathon speech to this post.
US Senator Bernie Sanders is currently engaged in a filibuster in an attempt to stop the passage of tax Cuts for Americans. He began the filibuster at 10.25 and, as of 4.14pm EST, it is still ongoing.
Here are the videos:
The beginning of the marathon speech
The end of the marathon speech
The entire speech is currently on the C-Span website.