Greenwald, Glenn. Why Privacy Matters. TED Talk, Oct. 2014, https://www.ted.com/talks/glenn_greenwald_why_privacy_matters?language=en. Accessed 2 April 2018.
This TED Talk talks about the idea of privacy, and that each person needs privacy. I can use this source as a possible naysayer for the idea that looking at medical records can be an invasion of privacy and not everyone is comfortable with others viewing their medical history.
The citation looks great to me, and the use of the source as a naysayer argument will make your essay strong!
I think this is correct for a citation matching the description of an online video. I think this will be a very cool paper.