Thomas E. Woods said in a Mises seminar not long ago when asked about how the Liberal label got transferred to big government types...his answer was interesting...I'll
paraphrase it here:
He said that in the beginning of our country everyone had a great respect for limited government and liberty and truly believed that freedom was the best way for everyone to benefit. But, over the years, some people became impatient for freedom to "work" when it came to addressing certain problems in society. So, they felt if the government "helped" to even the playing field enough, things could become more fair a lot faster.
In an opposing group, there were a more
conservative bunch of folks who believed that letting property rights, free markets and civil society work these issues was the best solution. And, of course, this meant abiding by the Constitutional limits on government.
From this shift and parting of ways, liberals and conservative labels came into use. None of this happened overnight.
The key to remember is that well intentioned people inhabited both sides of the schism, even today we must not forget this.
Even I can't say that Hillary Clinton is evil, I don't honestly think she is...but I do believe she is woefully misguided and has no principled concept of liberty or the inherent value of human freedom. But, the same can be said of nearly all Republican leaders as well.