Los Angeles, March 1 --Legally Blonde star Reese Witherspoon discusses domestic violence with herchildren to educate them about what's appropriate and what is absolutely not acceptable.The actress said at the 2nd World Conference of Women's Shelters in Washington, DC, "We talk aboutdomestic violence and what that means. Although the concept is somewhat foreign to them, they'restarting to understand that this happens to families in our country and throughout the world".Witherspoons daughter Ava, 12, and son Deacon, 8, have also discussed the recent public case of ChrisBrown and Rihanna with her, the US magazine reported.She said, "My daughter knows what happened. My son knows as well. We talk about what is abuse. Ithink it's important to talk to our daughters and our sons in order to educate them at an early ageabout what's appropriate and what is absolutely not acceptable".