How can you have a discussion with people like this?

Rick Saccone, who was the Republican candidate in the PA special election, said his opponents hated Trump (probably right on that), many of them hated the country (wrong) and hated God (wrong).

How can we have discussions on issues with people like this?  I don’t agree with conservatives on most things but I don’t think they hate the country or God.  This is just over the top and unhelpful to any idea of having a dialogue on issues.  Sad!