Alan Turing. Gay Savior of WWII Britain.
Driven to suicide (or possibly assassinated) by the British government.
This is like pardoning people for being runaway slaves after the Civil War in the U.S.. Pardoning people for disobeying unjust law, which violated basic human rights to be physically and psychologically free within their own bodies, simply continues to validate the unjust law. The law itself invalidates the justice of the system which maintained it. It is the system which is in need of pardon. Those abused by it deserve much more than an unjustifiable pardon.