What tragic common bond do Democrat Gabrielle Giffords and Republican Steve Scalise share? Both were nearly killed in separate shooting incidents six years apart.However, these two former House colleagues had starkly different reactions to the mass shootings at a country music concert in Las Vegas last Sunday night. That’s when a lone gunman slaughtered at least 59 people and wounded more than 520 others before apparently killing himself.Giffords and her husband Mark Kelly stormed Capitol Hill last Monday, prodding political leaders to pass stricter gun control laws.