I was wondering how the right defends children being separated.

[Kablooie]

And yes, they defend it wholeheartedly.
Here are a few examples:

Trump is just following policies put in place by Clinton and Obama.
They've always done this.
Democrats created fake outrage to gain political points.

Parents who take their children on long treks are endangering them so they must be taken away.

Democrats want all the children of the world to wander freely all over our country.

They separated Manafort from his children too.

------

Yep.
Not a single concern for the children and Trump is completely blameless.

[PaulX2]

1. Evil

[mucifer]

2. They only care about other people's children before they are born.

[CanonRay]

3. They don't. They have their fingers in their ears

and are loudly singing La-la-la-la so they don't have to think about it.

[uponit7771]

4. Here's how the Trump admin is justifying kidnapping kids (link)

https://www.democraticunderground.com/100210748391

[Iggo]

5. Once you realize they're talking about brown children, the mystery goes away. (n/t)

[syringis]

6. Hi Kablooie

In short blame whoever you want, but them...

[Dem_4_Life]

7. I've seen ... Obama did this too

These people are something else.

[regnaD kciN]

8. You left off...

...”Libtards whine about children being taken away from their irresponsible criminal parents, but they never utter a word about the millions of unborn children murdered in support of liberal sexual immorality!!!”

[comradebillyboy]

9. Psalm 137:9 nicely illustrates the Trump border policies:

New International Version
"Happy is the one who seizes your infants and dashes them against the rocks."