As I recall, the right to a defense does not mean a right to be found not-guilty no matter what.
But, then, I'm a "radical reactionary." If evidence is obtained illegally, it should not be thrown out, but the people who collected it illegally should be fined and prosecuted. If the evidence shows the defendant did the crime, then he does the time, no matter if the evidence was obtained illegally.
We are going too far in the direction of "criminal's rights," and not far enough in the direction of the rights of those injured by criminals. We need to come back to the middle ground - not too far to one side or the other.