Anti-extremist organisations have been relatively weak in the Netherlands – as have extremist organisations – both before and after the Second World War. In the 1930s, the mass organisation Unity through Democracy recruited at its peak 30,000 members in its campaign against National-Socialism and communism, while the Dutch Committee of Vigilance of antinational-socialist intellectuals remained (intentionally) much smaller. Both may have exercised some influence on public opinion. After 1945, educational and investigative campaigns against right-wing extremism have been initiated by the Anne Frank Foundation and the KAFKA collective, without recruiting members. In particular the former enjoys a good reputation and may have influenced public opinion, though it is difficult to measure this.