Where do I start? Deceptive marketing practices, grossly inhumane conditions, environmental pollution, restrictive contracts on local growers, feed that includes arsenic, antibiotics, and god knows what else, and so forth.
These issues are not limited to Perdue (we've been spelling it wrong). These are the same issues that most industrialized meat producers are guilty of. Perdue has just always had a reputation of being the one of the worst offenders.
This is getting slightly off-topic, but I just took a course on US Food Systems and saw this great video on the future of farming with a focus on meat production. If you're interested in this sort of thing here it is (about 30 minutes long):