A second round of public rallies will be held today in Kansas City to call for higher pay for fast-food workers. The rally will have speeches by area ministers, community leaders and low-wage workers. It will be followed by a march. Similar events were held earlier this summer in Kansas City and St. Louis as part of a national focus by labor organizers and advocacy groups to raise the wages and collective bargaining power of fast-food and retail employees at some of the nation’s largest chains. More than 20 cities around the country are expected to stage rallies today, organizers said.