There isn't unanimity in the membership on this issue. I think it's a tricky one.
To the extent that there's research out there, I think it does support the concern that peremptory challenges are often used in a discriminatory way. I think there's reason to be concerned. When I think about when I've used my peremptory challenges, it's very difficult for me to articulate why it was I felt uncomfortable with a person. He glowered, maybe...? How would you explain that?
You know, it's really a tricky issue. I think there are folks on both sides, prosecutor and defence counsel, who feel it's valuable, but I don't know that any of us are really able to articulate why.