This word, referring to an integrated system of ideas about politics, values, and culture, is often associated with rigidity, fanaticism or narrow-mindedness. One who holds an ideology, from this perspective, is overly passionate and perhaps dangerous - e.g., “that idealogue.”  

A related line of thought arising from bipartisan circles is that more enlightened ideas are embraced cross-party - and that subsequently, “Fealty to a party or an ideology is inherently mistaken, the argument goes, because ideologies and parties are divisive” Benen, 2014

Others would argue that most everyone operates from some kind of ideology - a set of beliefs impossible to escape (even if we pretend to). From this perspective, ideology is not inherently dangerous, divisive or necessarily a sign of rigidity - but instead, a reflection of our natural human condition as self-interpreting beings.