Eric Trump made a triangular hand sign at the inauguration, and there is an ongoing debate about the meaning behind it and why he did it.

"Here's Eric Trump at the inauguration today, flashing the Illuminati pyramid hand sign, and his wife Lara tapping his arm and glancing down at his display and telling him to stop it. None of this ...

After the couple attended President Donald Trump's official swearing-in ceremony, a brief exchange has prompted social media chatter.

Eric Trump's hand gesture during Donald Trump's inauguration has gained attention online. Various conspiracy theories have emerged about the symbolism of the upside-down pyramid gesture.