The most severe statement that Spike Lee has made is a film called Bamboozled. This one deserves a whole separate discussion. It's
not at all surprising that the film did not get much notice. There
is much to make the viewer uncomfortable, regardless of color.

This doesn't make it a bad film. It makes it an important film.

OTOH, Summer of Sam I didn't care for and can hardly give an
opinion about. Some things work, some don't.

What I think emerges in an artists work is that the more
the artist grows as a world figure, the more he grows as a creator.

But no, I have not heard the interviews you mentioned.