John Lewis has written this NY Times oped. It begins:

As we celebrate the Martin Luther King Jr. Memorial, we reflect on the life and legacy of this great man. But recent legislation on voting reminds us that there is still work to do. Since January, a majority of state legislatures have passed or considered election-law changes that, taken together, constitute the most concerted effort to restrict the right to vote since before the Voting Rights Act of 1965.