Facebook was founded primarily by Jews. Many of the most important leadership positions at Facebook are also held by Jewish people.
Sources:
“Facebook Adds New ‘Exposed to Harmful Extremist Content’ Warning” – Heavy
#100 - Mark Zuckerberg
#364 Dustin Moskovitz
#365 Eduardo Saverin
#366 Sheryl Sandberg
#368 Stan Chudnovsky
#367 Adam Mosseri
#369 David Fischer