You can't argue with the video and audio evidence in the tazer incident, just as you can't with the Michael Richard's racial rant (both events were captured on cell phones). It is outrageous behavior, and a sad commentary on where we are nowadays in America. It proves there is still a lot of mending and healing that needs to be done. The alternative is very bleak.
Thankfully, web sites like Slashdot allow people to debate these issues and overall that is a great thing for democracy and for reinforcing the American Value that racism in any form will not be tolerated. We need to be one big team regardless of race, color, creed, religion, sexual orientation, whatever.