Byron Allen challenges Madison Avenue to spend with Black-owned media, or else: Tuesday Wake-Up Call

Welcome to Ad Age’s Wake-Up Call, our daily roundup of advertising, marketing, media and digital news. If you're reading this online or in a forwarded email, here's the link to sign up for our Wake-Up Call newsletters.  Power suit Byron Allen is taking matters into his own hands. Tired of pledges from advertisers to diversify their ad spend without actually following through, the owner of a production company and eight cable networks, including the Weather Channel, is insisting agencies...