Gary and Aldona Robbins, following on the work of Norman Ture, demonstrated here and here, that it is not only high tax rates (how heavily government taxes) that matter.

FORBES: Magazine Article

Makeba abruptly left the U.S. after her then-husband, the radical civil rights campaigner Stokely Carmichael later known as Kwame Ture fell afoul of the authorities and opted for exile in Guinea in West Africa.

NPR: South African Singer Miriam Makeba Dies