I tend to assume that regardless of political affiliation, pro-surveillance mindset comes from blind trust in the institutions doing surveillance, whether that's the government or google. This is often driven by ignorance and/or a failure to reason about implications of large-scale systems, rather than any particular political ideology. I think at least in the US, the cold war and our electoral system and culture's totalizing nature has conditioned us into drastically overemphasizing ideology as a factor in people's decisions and reasoning, especially of our outgroups. This tendency, kind of a groupwise variant of what's called the Fundamental Attribution Error, is a common failure of human reasoning, but this culture has exacerbated that tendency to a large and I think detrimental degree. It's why you see so much propaganda focused on painting various preferences, beliefs, and even inborn traits as inherently ideological in nature