<P> Fathers 4 Justice (or F4J) is a fathers' rights organisation in the United Kingdom . Founded in 2001, the group aims to gain public and parliamentary support for changes in UK legislation on fathers' rights, mainly using stunts and protests, often conducted in costume . </P> <P> Former F4J members, who do not agree with Matt O'Connor's leadership, such as Paul Manning, formed the New Fathers 4 Justice group, in 2008 . </P> <P> Fathers 4 Justice was founded in the UK by Matt O'Connor, a marketing consultant . </P> <P> Fathers for Justice's stated aim is to champion the causes of equal parenting, family law reform, and equal contact for divorced parents with children . It is best known for its campaigning techniques of protest stunts, with participants often dressed as comic book superheroes, and frequently climbing public buildings, bridges, and monuments . </P>

How many members does fathers 4 justice have