Phenomena is plural, phenomenon is singular.

Here, the New York Times is being chastised for not covering the “Trump Phenomenon” in a way that the president elect finds acceptable. That is bordering very closely on a violation of the first amendment.

Clearly, The Donald somehow managed to get his hands on his twitter account again. His handlers need to tighten up security in that area.

Here is a link to the tweet:

Wow, the @nytimes is losing thousands of subscribers because of their very poor and highly inaccurate coverage of the "Trump phenomena"

— Donald J. Trump (@realDonaldTrump) November 13, 2016