Political defection, not illegal, but is wrong?

Do defectors deserve vilification and the opprobrium that accompany them to their newfound political homes?

Generally what isn’t illegal shouldn’t be wrong, at least under a secular state, we live in. In a non-secular state something may not be illegal but wrong, because right is also based on morality or culture for that matter. Law, morality and culture of course overlap, are interrelated and they are not easy to separate. However, the defection issue is still topical like it was in the late 1990s. Back then 11 MPs defected from the BNF to form a new party, the BCP.