The berries look similar to juneberry, aka sarvice berry, aka service berry (a common berry bush with many regional names). This particular plant has a disease of some sort (see the discolored leaves) so even if it isn't poisonous it probably doesn't taste very good, or has worms in it.
Definitely not blackcurrant. Blackcurrant looks like this:
Note how the leaves look.
This looks more like chokeberry or some species of amelanchier. Or hagberry, which is poisonous.
The berries look similar to juneberry, aka sarvice berry, aka service berry (a common berry bush with many regional names). This particular plant has a disease of some sort (see the discolored leaves) so even if it isn't poisonous it probably doesn't taste very good, or has worms in it.
It is a striking photo though
Looks like huckleberries.