How do you know "他們平時欺壓百姓"? You learned it from some cheesy mov

Do you have any evidence against any 國民黨老兵? If you don't, your statement can be considered defamation,a crime punishable by law.
If you do have evidence against some of them, how can you generalize it and use it against all of them? Again, you are guilty of defamation.

Lady, I suggest you think before you talk:

Do you have any rights to judge people you know nothing about?

Why do you think you have rights to impose your ideology over other people?

What make you think you have the right to to label others as traitors of China at the same time declare yourself a patriot?

Don't you need to proof yourself with something more concrete other than 耍嘴皮子唱讚歌? I am sure you know 口是心非，口蜜腹劍 mean. I am not saying you are doing that, but there is no evidence suggesting you are NOT doing that either.

So a word of advice: be nice to your fellow country men and show some appreciation for their sacrifice even though they are not perfect.