Elizabeth Harrington of the Washington Free Beacon details one form of criticism of the weekend women’s march that might surprise you.

Transgender activists are upset that the women’s march over the weekend was not inclusive to biological men who identify as women, as the protest presented an “oppressive message” that having a “vagina is essential to womanhood.”

Saturday’s event to oppose the inauguration of Donald Trump was largely a “white cis women march,” with too many pictures of female reproductive organs and pink hats, according to trans women and “nonbinary” individuals interviewed by Mic.com.

A fight is brewing between “trans-exclusionary radical feminists,” or “TERFs,” and transwomen, according to the article, “How the Women’s March’s ‘genital-based’ feminism isolated the transgender community.”

The women’s march had an over-reliance on slogans and posters depicting gender norms, like using pink to represent women and girls, said some transgender activists who boycotted the march.