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President Obama - President Obama, Rev. Jesse Jackson and other thought leaders weighed in on Twitter following the U.S. Supreme Court's decision to invalidate a key measure in the 1965 Voting Rights Act on Tuesday. In a 5-4 decision, the justices ruled that Congress can reinterpret the map used to determine which areas of the country must get "pre-clearance" from the Justice Department before changing voting laws and procedures. — Britt Middleton (Photo: Barack Obama via Twitter)

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Vice President Joe Biden -  (Photo: Joe Biden via Twitter)

Photo By Photo: Joe Biden via Twitter

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Rev. Jesse Jackson Sr. - (Photo: Rev. Jesse Jackson Sr. via Twitter)

Photo By Photo: Rev. Jesse Jackson Sr. via Twitter

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Melissa Harris-Perry - (Photo: Melissa Harris-Perry via Twitter)

Photo By Photo: Melissa Harris-Perry via Twitter

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Cory Booker - (Photo: Cory Booker via Twitter)

Photo By Photo: Cory Booker via Twitter

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Roland S. Martin - (Photo: Roland S. Martin via Twitter)

Photo By Photo: Roland S. Martin via Twitter

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Donna Brazile - (Photo: Donna Brazile via Twitter)

Photo By Photo: Donna Brazile via Twitter

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Keith Boykin - (Photo: Keith Boykin via Twitter)

Photo By Photo: Keith Boykin via Twitter

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GLAAD - (Photo: GLAAD via Twitter)

Photo By Photo: GLAAD via Twitter

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Sen. Kristen Gillibrand - (Photo: Kristen Gillibrand via Twitter)

Photo By Photo: Kristen Gillibrand via Twitter

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Rep. Pete Gallego - (Photo: Pete Gallego via Twitter)

Photo By Photo: Pete Gallego via Twitter

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Star Jones - (Photo: Star Jones via Twitter)

Photo By Photo: Star Jones via Twitter