Safety ≠ Beauty?

Is beauty a trait that only comes from something that evolves naturally, unplanned....unrestricted? 

In the relationship between politics and architecture, it seems as though something 'un-designed'  can be transformed into something 'over-designed' with the implementation of one element: safety.  Whether is be the chaos of the slums, layered complexity of a city's natural growth, or an unsanctioned Spanish circus, the need for improved safety is deemed as a need for improved restrictions.  With these restrictions sometimes comes the 'over-planned' ideology and starts to overthrow or inflate current ways of living and imposes rigid restrictions that begin to modularize society and kill the beauty of what once was.

So, how can we approach change in a responsible manner that does not kill the history of place, but promote its beauty while providing safety and well being?