Do you say "social media is" or "social media are"? Google and dictionaries disagree

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Do you say "social media is" or "social media are"? It is medium vs. media (plural), yet "social media is" looks like the preferred use by most according to a simple Google search comparing the use of "social media is" (13 million results) vs. "social media are" (1.9 million results). The same applies to "data is" vs. "data are" - it is datum vs. data (plural).

Comments from Twitter:

@smlinstitute Very interesting question and observation. I always say social media is...

@medrevise "social media" is a noun

@MedicalBillDog Most folks say "data is," too. Google "media is" and "data is" including the quotation marks.

Image source: OpenClipArt.org, public domain.