marching up

UK
/ˈmɑːtʃɪŋ ʌp/
US
/ˈmɑrʧɪŋ ʌp/

Library

How one journalist risked her life to hold murderers accountable - Christina Greer
And marched up front alongside the white women.
history
marcher en tête
Marcher en tête d'un cortège ou d'une manifestation.