New Knicks big man Joakim Noah blocked out some time for some Q&A with Post columnist Steve Serby. [cut] Q: If you were president of the United States, you would … A: I would make it illegal to buy guns. Q: What are your views on what’s been happening this past week? A: This past week? … This past decade? Or this past … forever? My views haven’t really changed much. It’s just very sad what’s going on in this country. Not just the police brutality, that’s getting a lot of the headlines right now, but just kids killing kids,...