Ron Burkle Looking for an Antidote to B&N's Poison Pill

Hell, it seems, has no fury like a stockholder scorned. And so it shouldn't have come as a surprise that Ron Burkle, the billionaire in charge of private equity company Yucaipa Cos., would eventually voice his complaints against the 'poison pill' measure that bars him from acquiring more than 20% of book retailer Barnes & Noble's (BKS) total stock and mitigates against a hostile takeover.