I don't understand your point. Who said anything about ostracizing people with links to the opposing side? In fact, Sama said the exact opposite. Winning back key constituencies is all great, and should definitely be done, but it isn't going to do anything until the next elections 2 years away. If you're suggesting we just sit tight and let Trump do whatever he wants till then, that is simply ridiculous.

It's not easy, but protests work. Calling your local congressmen and putting pressure on them works. Remember the debacle from back when Republicans tried to "reform" medicare? People spoke up overwhelmingly. They put tremendous pressure on their congressmen, who in turn put pressure on the party leadership, who then backed down. The same mechanic played itself out during every single government shutdown, where public pressure eventually cowed stubborn politicians into submission.

It's not going to be easy, but some things are worth fighting for. Defeatism is seductive, but isn't going to get you anywhere.