[...]the aggressive push of current Political issues.

https://en.wikipedia.org/wiki/Kirk_and_Uhura's_kiss

In the episode of Star Trek: The Original Series titled "Plato's Stepchildren", season 3 episode 10, first broadcast November 22, 1968, Uhura (played by Afro-American actress Nichelle Nichols) and Captain Kirk (played by white actor William Shatner) kiss. The episode is often cited—incorrectly—as the first interracial kiss on television. It was, however, the first instance in which a kiss between a black person and a white person on U.S. television was scripted, as an earlier kiss on Movin' with Nancy was unscripted. The episode aired one year after the U.S. Supreme Court struck down nationwide laws prohibiting interracial marriage.

Star Trek has always been political.