DENVER (AP) _ Several black community groups are demanding their members boycott a summit on youth violence because it is being held on the same day as a celebration marking black history.

The statewide summit was initially planned for fall, but it was moved ahead to Saturday shortly after the Columbine massacre in which two student gunmen killed a dozen classmates, a teacher and themselves on April 20 at Columbine High School.

Although Gov. Bill Owens regretted the scheduling conflict with the black history celebration known as Juneteenth, the Columbine shootings made it important to hold the youth violence summit sooner, he said.

Black leaders are not pleased.

``It's absolutely offensive,'' said Michael Hancock of the Urban League. ``To me it boils down to a sensitivity issue.''

Hancock would not say how many people would be involved in the boycott, which is supported by the National Association for the Advancement of Colored People and the Colorado Black Chamber of Commerce, among other groups.

Owens noted that a lot of other events were scheduled for June 19 as well. And he said 15 black ministers have encouraged their congregations to attend both events. Owens plans to visit both.

``We look forward to Saturday as a time we can learn from one another, listening rather than talking,'' Owens said.

About 3,000 people from across the state are expected to attend the day-long summit. Topics will include youth gangs, gun control legislation, parenting and school safety.

Two miles northeast of the college, about 140,000 people will gather for the 33rd annual Juneteenth celebration, a street fair featuring barbecue, arts and crafts and entertainment.

The event is celebrated in numerous states, primarily in the South and Southeast.