If you look up national day calendar, you will find that most every day of the year already has some kind of designation. For example, August 5 is National Underwear Day. The proposed Voting Rights Day of August 6th is already:
National Root Beer Float Day
National Fresh Breath Day
National Wiggle Your Toes Day
American Family Day – First Sunday in August
National Friendship Day – First Sunday in August
National Sisters Day – First Sunday in August
For our legislators to waste their time designating another fluffy holiday simply allows them to say they accomplished something without really accomplishing much.