Indeed, it is sad that people who know better and preach the principles of democracy are intolerant of opposing views .

There is an apparent absence of internal democracy within political parties.

The question, though is: have the party constitutions not put in place structures for resolutions of policy conflicts?(voting procedures, for example?)

In general, it is such prevalent intolerance that renders national politics immature and repellent to many people of goodwill who would wish to serve the country through politics.