Eric Giunta explains why Pope John Paul II should not be canonized:
Contrary to leftist media reportage, the late Pope was not an authoritarian despot, bent on enforcing Catholic orthodoxy on an unwilling church. Quite the contrary: theological liberals and dissenters flourished in all of the Church's structures, from lay politics and Catholic universities, to the ranks of priests and bishops. Not a single pro-abortion Catholic politician has been excommunicated from the church; only a handful of openly heretical priests were asked to stop teaching theology, but were otherwise permitted to exercise their priestly ministry unhindered. The Church in Austria openly dissents from orthodox Catholicism with papal impunity.I recommend to read it all at RenewAmerica.com.
Here is Giunta's blog Confessions of a Liberal Traditionalist.