Yes, 'higher education' is a suitable phrase for an academic essay, but note that it is a broader term than 'university education'. Not all higher education is necessarily gained at university - there are institutions other than universities which offer higher education. Another term you could use is 'tertiary' (meaning third stage) education'.

You may want to define what you mean by higher education, such as "Education beyond 12 years." Another more precise and accepted term is "Post secondary education."

Actually I mean that they are more likely to actively demonstrate against it. Besides, there are more than just one political agenda in the 2016 Spring Festival Gala, should I use 'resist the politcal agendas of the 2016 Spring Festival Gala'? Thank you!

Anyway, certainly no 'to' after resist.

Do you mean that there is a political agenda in the 2016 Spring Festival Gala? Perhaps a better wording would be 'resist THE political agenda OF the 2016 Spring Festival Gala.' But I am not sure if 'resist' is the best verb here anyway, what exactly are you trying to ask? Do you mean that your hypothesis is that people with Higher Education are less likely to follow or passively accept the political agenda, or that they are more likely to actively demonstrate against it?