I share the view that banning the burkini is going too far. It is on the same level as other accepted religious garments as Jody Bourgeois points out. There are women wearing these of their own free will and they would not face any repercussions if they removed it.
However, the niqab or the burka (or burkha, bourkha, burqa) are, I feel, different. You do not see a single woman on a business trip wearing one or the other. The full face covering takes a woman’s identity away — completely. To me, it is a sign of enslavement. The women might tell you that they don’t feel enslaved, that they wear a burka or niqab on their own free will — but they have been conditioned from birth that this is how it should be. Bethany C. sums it up nicely below. Who has the strength to rebel against the whole (male dominated) society? And, what happened to some of the women who did rebel?
We need to take a stance here — I feel that not allowing muslim men to parade their niqab or burka clad “flock” in our countries is the one of the things we should do as a part of an active fight against oppressive, radical religions.