Step 1: Put up a big "no nazis" banner as if that isn't already widely agreed upon by all sane people.
Step 2: Start calling people you don't like "nazi" and instigate a pile-on to get them kicked out of groups.
Step 3: When they complain about your "no nazis" banner because they realise what it means, cite it as evidence that they're nazis.
Step 4: Become ever more extreme as more and more people drift towards right wing populism, as if you aren't one of the main causes of it.