Tony: Few anarchists have ever performed violent actions  These few are vastly outnumbered by the violent adherents of other political ideologies  Ttherefore, the special association in the public mind between anarchism and political violence is unwarranted  Keisha: Anarchists have always been few in number, whereas other ideologies have often spawned mass movements
Ttherefore, the proportion of anarchists who are violent is possibly greater than the proportion of adherents of other ideologies who are violent
She shows that Tony's conclusion is questionable because Tony bases it on a comparison that inappropriately involves absolute numbers rather than proportions.