The sign has an image drawn underneath which may be a heart - there are other images on Google with the same slogan with illustrations of a heart.
TU LUCHA ES MI LUCHA
De Dam / Dam square (Amsterdam)
Emanuel Oladokun, Richard Weaver, Basil Barrett, Camille Parker, Lieke Bremer
“BLM Sign,” The Black Archives, accessed March 26, 2023, https://collection.theblackarchives.nl/items/show/106.