I didn't see anywhere where it said specifically what he tweeted. I hate racism, but I think as long as you're not making threats toward anyone, you should have the right to say what you want. And of course if you say anything slanderous then you're subject to slander laws, but that's a civil matter rather than criminal. I guess I just value free speech too much.
Christian apologetics is the art of rolling a dog turd in sugar and selling it as a donut.