In Switzerland, everyone can change the constitution. All you need are 100'000 signatures which will be checked by the autorities (swiss citizens according to the registry and so on) and you have to win the votation, held once you brought in 100'000 Signatures. Most of this initiatives do not win the support of the voting population and are turned down in the votation. However, the bann on minarets consists of one sentence: "The building of minarets is forbidden". With that not a single problem is solved, but many new generated. Political analysts therefore say, that this entire initiative is a clear abuse of rights.
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from the article: Swiss Muslims gain support from unexpected source - rabbis