Are issues like poverty/violence byproducts of modernizing?

I'd say that modernization and technological advances as a whole has actually made us less violent and poor compared to the past.

We will always have poverty and violence, perhaps it'll increase or decrease in the near future depending on what kind of situation the world ends up in. But as a whole we have progressed if you look at the rates inwhich violence has decreased despite much news seemingly showing otherwise. But even that helps to illustrate the point in how much violence has decreased in society. News of the murder of multiple people by one person, beheadings, domestic abuse turning to murder and so forth does bring about some shock to us. Many of us sit and wonder how someone could do such a thing.
Take a leap back 200 years or even further and such violence was more common and didn't shock people as much as it does today.

With poverty, that too has improved over time if one look back into history. The gap between the wealthy and poor was much larger then it is today. Of course that doesn't mean it is adequate as it is, but in context it's a positive development.

How things will be in the future we don't know, it depends on which way the world moves. Perhaps we'll further the positive move onwards, or we'll suffer a decline. Who knows?

While that person sleeps under the boardwalk in Miami and people share tents on public land and people sleep in the lobby of the public library hundreds of illegal aliens cross ´Murica´s borders every single day looking for jobs and opportunities which they find like flipping burgers at MacDonald´s, picking lettuces on the fields of Cali ( job that´s done crawling on your knees ) or mowing lawns. Oh yeah, living in a rich country and not finding a job must be a real bitch ..... wait ! illegal aliens do find jobs, lots of them.

Perhaps I misunderstand this statement. Maybe you meant, "Those born at or near the poverty line," or something similar, and you didn't actually mean to refer to the poor in entirety, I don't know. But we definitely have real, true poverty these days as well, including in the US.

I grant you that now the medical care is better (although up until very recently these people only received that in emergency situations). But I'm pretty sure the kings of 2000 years ago benefited from their governments and basic laws of society as well. And most of the kings had shelter, clothing, and food.