<human>: More specifically, how can I help my siblings through their depression?

**Story time for those interested:**

*Using a throwaway because almost everyone I know, knows my username.*

At least one member of my family is currently battling depression. Possibly two. Because I am not, nor have I ever dealt with this I can't be sure.

One is my older sibling, and the other is my younger sibling. Both are in their 20's. Both have prematurely left work of some sort. Both have prematurely left school of some sort. Right now they just kind of float through life on my parents dollar.

I see how it's affecting my parents. They feel used, useless and frustrated. I also see how it's affecting my siblings. They're unfocused, unmotivated, have no confidence, and crippling social anxiety issues.
More than this, I can tell that they're almost always sad. Even the good moments are just unbearably fleeting.

My parents sometimes blame my brothers, being so stressed and frustrated they find it hard to understand what depression can do to a person. My siblings sometimes blame my parents, seeing them as over controlling and unsympathetic, even though my parents provide everything for them. And then sometimes everyone blames themselves.

We *do* talk about it to *some* extent. My parents mostly only talk to them about the surface issues. Money, jobs, education, social life. They've even bailed them out of sticky situations, directly related to their lifestyle. 

I've talked to my parents about depression, but they seem so lost when I mention it. Either not knowing how to even go about dealing with it, or just not understanding it fully. They are part of a much older generation. These things just didn't get talked about when they were young.

I've also talked about depression with my siblings, but they are just completely unwilling to talk to me. It's honestly like talking to a brick wall. They don't seem to take any of my advice or support in. I've heard similar reports from my parents when they've made attempts to address the depression thing. 

So reddit, I'm at a loss. Your guidance would be much appreciated.

Can you give me a shortened version of the text?
<bot>: Our entire family is being torn apart by depression. Have you ever dealt with this? How can my family get through this?