NEW : Newton Mayor James Holmes 's gun control group releases gun reform ad . Volunteers read names of gun violence victims for midnight . A few gun rights advocates protest peacefully . Trial expected in July 20 , 2012 for Bloomberg , who has pleaded not guilty to the killings .
NEW : New York Mayor Bloomberg 's gun control group releases gun reform ad . Volunteers read names of gun violence victims for more than 10 hours . A few gun rights advocates protest peacefully . Trial expected in 2014 for James Holmes , who has pleaded not guilty to the killings .