No, the legal consequences of a defense case are potentially so dire I'd walk right past the alley.

As ... Massad Ayoob, I think, put it, we're talking about the equivalent of visiting the hospital, noticing a complete stranger who needs a lot of money for treatment, and writing a check for $250,000 plus or minus and putting it in his pocket. I'm only willing to do it for "me and mine", i.e. my friends and blood relatives, especially since I don't have the sort of money that's required for a competent defense against a serious felony charge, no matter how bogus it might be.

And you might want to re-read the above, an ideal, if it comes to it, is "a woman explaining to police how her attacker got that fatal bullet wound" (better if the attacker is not killed), not a Good Samaritan explaining. We're all ultimately responsible for our own self-protection.