KANSAS CITY, Mo. — On Thursday — the day after the Kansas City Chiefs victory parade and rally ended in a mass shooting — a message appeared in front of Union Station. White folding chairs spelled out “KC STRONG,” a sprawling word of encouragement amid bleak headlines. After Wednesday’s parade, thousands of fans gathered outside Union Station to hear players and team officials. But as the rally wrapped up, gunshots rang out. Kansas City police said 23 people were shot, and Johnson County mother Lisa Lopez-Galvan died. Police arrested three people. Two teenagers remain in police custody, while …