Protestors demanded "Where is Ana Mendieta" and chanted poems and slogans as they crossed the Millennium Bridge from St. Paul's Cathedral to the newly-expanded Tate Modern in London earlier this week.

Artists' previews for the new Herzog & de Meuron-designed building were interrupted by activist groups who were on hand to decry the inclusion of minimalist sculptor Carl Andre and the exclusion of works by Cuban-American artist Ana Mendieta, reports Hyperallergic's Isabella Smith.

Mendieta died in 1985, at age 36, after falling 33 stories from the window of the Greenwich Village apartment she shared with husband Andre. He was acquitted after a contentious murder trial.

“I WAS PUSHED — I DID NOT FALL," shouted protestors who held a sign reading "Carl Andre Killed Ana Mendieta."

Hyperallergic reports that the Tate owns five Mendieta works and 10 by Andre, but none of Mendieta's are displayed.