It was a big day for plans, and Senator Elizabeth Warren rubbed her hands together almost gleefully as she said, “I’ve got a lot of them.”

But at the Essence Festival in New Orleans on Saturday, she was not the only one with a plan.

Ms. Warren and Senator Kamala Harris of California both used the occasion — the annual culture and music festival sponsored by Essence magazine, which caters to black women — to introduce major new proposals intended to address racial disparities, including in wealth and homeownership.

Senator Cory Booker of New Jersey and former Representative Beto O’Rourke of Texas also spoke at the event.

Kamala Harris: $100 billion for homeownership

Ms. Harris announced a plan aimed at reducing the racial gap in homeownership, including $100 billion to help black families and individuals buy homes in historically redlined communities, where banks systematically denied them loans. The money would help cover down payments and closing costs for up to four million families or individuals, providing home buyers with up to $25,000 each.