Are there restrictions on peremptory challenges?

Are there restrictions on peremptory challenges?

Iloilo Jones (Executive Director of Fully Informed Jury Association) gives expert video advice on: What is 'voir dire'?; What kind of questions will I be asked as a juror?; Why do I have to answer personal questions before I'm chosen for jury duty? and more...

There are some restrictions on peremptory challenges. First of all you only get a certain number of them and if a pattern emerges, let us say for instance there is a Native American kid on trial and from a community that is say 30% Native Americans and the prosecutor is dismissing every Native American who is in the jury pool the judge may actually say, "Wow, we need to go the chamber and talk about this".