“Yeah, we’re over fire code,” a security guard said with a laugh and a shrug while eying the crowd at Bernie Sanders’ jam-packed town-hall meeting Saturday night. Around 5,000 people showed up to see the left-wing dark horse give his first stump speech in Colorado since launching his presidential campaign in May. People of all ages – mostly white – filled the air-conditioned gymnasium at Denver University well before the event was billed to start, though latecomers – or on-time comers – could still watch a live video feed on the outdoor lacrosse field.