@roger,
DACA is personal for me. Someone I care very much about came here as a child and is now contemplating being deported to a country he doesn't know. So yes, I want my representatives to do whatever it takes to protect the Dreamers.
As a matter of politics, I also support the shutdown (assuming that the other side continues to play hardball). The purpose of the shutdown is to give the minority party leverage. That is how it works. The benefit is leverage, the cost is the risk of a public backlash. In poker, when you have a good hand you bet for value (meaning that you raise with an expectation that it will turn out well for you). In this case, with Trump unpopularity and his recent gaffes, it is time for the Democrats to raise the stakes.
I have a personal reason to believe that this is a moral stand. I also believe that this is a politically smart move in this case. Yes, there is risk of a public backlash, but the Democrats probably have the upper hand and it is worth the risk. If people we care about are deported, I am not the only American voter that the Democrats will have alienated.