Nice of them to use Arial font for the MS-13 part.
Worst. Photoshop. Ever. The "tattoos" don't even follow the curve of the skin. You have to be a special kind of stupid to fall for it.
On top of that ... we don't even know if it's his hand. This is the Trump admin, after all. If you start out assuming they're lying, that assumption almost always ends up being proven correct.
And even if it is his hand, and the tats are MS-13 tats ... it doesn't matter. Due process still applies, and anyone saying otherwise is a freakin' fascist.