Brian Steinberg Senior TV EditorLate-night host Jimmy Kimmel apologized Tuesday for a series of impressions he did in the past of Black celebrities, such as former NBA player Karl Malone, but said he believes he has “evolved and matured over the last twenty-plus years” and intended to continue to speak out on causes he believed were worthy of discussion on his ABC show.“I have long been reluctant to address this, as I knew doing so would be celebrated as a victory by those who equate apologies