A1 Viacom Ousts Executive Sumner Redstone , Viacom 's 83-year-old chairman , announced that he was forcing out his top executive , Tom Freston , dramatically reasserting his control over the media giant he built over decades .
Viacom
Sumner Redstone
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Sumner Redstone
Viacom
/business/company_shareholder/major_shareholder_of
Sumner Redstone
Viacom
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PERSON
Sumner Redstone
ORGANIZATION
Viacom
PERSON
Tom Freston