Martin Luther King III blasted Sen. Kyrsten Sinema (D-Ariz.) after her Thursday speech announcing that she wouldnt support changes to Senate rules to pass Democrats major voting rights bills, accusing the Arizona lawmaker of siding with the legacy of prominent segregationists and white supremacists over that of his father, the late civil rights leader Martin Luther King Jr.

History will remember Sen. Sinema unkindly, King III said in a statement shortly after Sinemas speech on the Senate floor ended. While Sen. Sinema remains stubborn in her optimism, Black and Brown Americans are losing their right to vote.

Shes siding with the legacy of Bull Connor and George Wallace instead of the legacy of my father and all those who fought to make real our democracy, King added.

Connor was a white supremacist whose brutal efforts to enforce segregation and crack down on civil rights activists from his perch as city commissioner of Birmingham, Alabama, made him one of the most prominent faces of opposition to the civil rights movement. Wallace, a former governor of Alabama and onetime Democratic presidential candidate, was a staunch advocate of segregation until late in his life.

Sinemas speech all but killed Democrats attempts to pass two major voting rights and election reform packages the Freedom to Vote Act and the John Lewis Voting Rights Advancement Act just minutes after the House of Representatives passed updated versions of both bills.

Sinema reiterated that she supports both pieces of legislation, but not a change to the Senate filibuster rules that require 60 votes for bills to pass. Both bills lack the Republican support necessary to overcome the filibuster . Without Sinema, Senate Democrats do not have the 50 votes necessary to reform the filibuster and pass the legislation with a simple majority.

Her speech was widely panned by voting rights activists and advocates for filibuster reform, whove argued for months that passage of the two voting bills was vital to thwart an onslaught of new Republican state laws that place new restrictions on voting rights. The filibuster, reform advocates have noted, has historically served as a useful tool for the thwarting of major civil rights legislation.

When the 1891 civil rights bill was filibustered, it ushered in 100 years of Jim Crow, Arndrea Waters King, a civil rights activist and Kings wife, said in the statement. If Senator Sinemas position remains, shell extend that century of white supremacys chokehold on our democracy.

And as Sen. Raphael Warnock (D-Ga.) argued on the Senate floor before Christmas, the rule imposes a supermajority threshold on Democrats efforts to protect voting rights that does not stand in the way of GOP attempts to curtail them in the states, where simple majorities were sufficient to pass 31 new voting restriction laws in 19 states last year.

Although Sinemas speech appeared to doom efforts to pass the two bills, which would invalidate many of the new GOP laws harshest provisions and establish federal standards for voting rights, the Kings and other civil rights activists will stage events and call for the immediate passage of the legislation in Phoenix, Washington, D.C., and other cities next Monday, to coincide with Martin Luther King Jr. Day.