MSNBC “Hardball” host and “Jack Kennedy: Elusive Hero” author Chris Matthews was at the Boston Convention and Exhibition Center on Tuesday afternoon to talk about President Kennedy’s role in the civil rights movement. The talk was part of the 25th anniversary celebration of The Partnership, Inc., which aims to train and increase the number of professionals of color in and around Boston. Channel 5’s Liz Walker moderated the lunch program. Suffolk Construction Co.’s John Fish was there to introduce Matthews.