(cont.)  The "right" to drive a car, be a barber, be an attorney, etc are all granted based on meeting specific criteria. 

Those "inalienable rights" you're so fond of referencing are included in the preamble to the Declaration of Independence..."We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness."  They do not define the "rights" of citizenship or address the limitations on judicially defined rights.  BTW: We, as a society, do in fact "alienate" all three of these "inalienable" rights with some regularity: we execute and we imprison....

The "right" to smoke in County Parks is not an "inalienable right"....far from it.  Oregon state, county and city ordinances define the rights of smokers and Lane County has every statuatory power to limit smoking.  For you to compare it to racial discrimination is, frankly, rather silly.