DANCE

The Dance Theater of Harlem opened its 20th anniversary season Wednesday night in New York with a performance of “Giselle.” “The fact that we have survived and gotten here in 20 years is a miracle,” said Arthur Mitchell, executive director and co-founder of the company. Speaking before the performance, Mitchell thanked the audience for its support and the city of New York for a $2.5-million grant that will be used to renovate the Harlem facility and other properties.