drawbridge 吊桥

a bridge, especially one over a castle's moat, which is hinged at one end so that it may be raised to prevent people crossing or to allow vessels to pass under it.

e.g. Pulling up the drawbridge on students who want to learn through reforms that ultimately reduce student choice risks damaging the life chances of young people from disadvantaged backgrounds.

snowflake

A very sensitive person. Someone who is easily hurt or offended by the statements or actions of others. The term has nothing to do with politics and snowflakes can be liberal or conservative in their views, but usage would show that it is a term far more readily employed by the right to describe the left, than the other way round.

on the back foot 处于劣势

on the back foot 处于劣势 at a disadvantage; out-manoeuvred or outclassed by an opponent

e.g. This not only put him on the back foot, it also meant he was not able to support her as well as he could.