Don't let current events force you to discuss an issue if your position is weak and is being criticized by the political opposition and its media allies. (Example: Don't enter into a discussion about Climate Change when a Category 5 hurricane is approaching Florida a week after a Category 5 hurricane hit Texas. Just say, "Now is not the time to discuss X.").
Don't frame issues in terms of right and wrong; frame them in terms of whether they are "politically correct" or "politically incorrect."