1977 - Appoximetely a dozen armed HanafiMuslims take over three buildings in Washington, DC, killing one person and taking more than 130 hostages. The hostage situation ends two days later.
... 3 - Sally Rand[?], dancer (+ 1979)
April 7 - Ralph Bunche[?], diplomat, winner of the Nobel Peace Prize
April 16 - Fifi D'Orsay, actress (+ 1983)
April 22 - ...