Worst Metaphor Ever - Finalist

There's no author credited with this one, but it appeared in a brochure for an e-learning conference:

Poet, educator, historian, best-selling author, actress, playwright, civil rights activist, producer and director, Maya Angelou is one of the great voices of contemporary black literature and a remarkable Renaissance woman.... She has developed a unique ability to shatter the opaque prisms of race and class that so often divide us.

If I ever come across an "opaque prism of race and class" that needs shattering, you know who I've got on the speed dial.