Find a news or academic article on the effects of imperialism today, somewhere in the world. Avoid "opinion pieces," "open-source" items, and "wikis."

Imperialism is often talked about as if it is a thing of the past, left behind in the Days of the Raj, but the effects of imperialism are still alive and strongly felt in many parts of the world. In your question, you do not specify whether you are looking for an article about the effects of imperialism still lingering from an empire that has since collapsed, or if you are talking about imperialism still actively being enforced. As such, I will help you find some articles from verified sources on both of these topics.
"Modern imperialism" is not the same thing as the imperialism that spread over the globe during the heyday of the British Empire. If we conduct a news search for modern imperialism, or imperialism today, what we will find are largely news articles about the United States and the way it exerts its power over other countries through the use of overseas military facilities and through the provision of aid and defense agreements as a means of influencing foreign governments. The Boston Globe has written a number of articles about the effects of American imperialism in the present day, of which one can be found here: https://www.bostonglobe.com/opinion/2016/10/30/the-fatal-expense-american-imperialism/teXS2xwA1UJbYd10WJBHHM/story.html
Another perspective on modern imperialism can be found in this BBC article about Venezuela: http://www.bbc.co.uk/news/world-latin-america-42913191
There is much to be found in the news about the Venezuelan response to Trump's "imperialism," including this Economist article: https://www.economist.com/news/americas/21737555-regional-solidarity-should-not-trump-defence-pluralism-how-venezuela-tests-latin-americas
In looking for a reputable news article on a preferred topic, if we know what we are looking for, such as more information about the Venezuelan situation, the best approach is simply to go to news.bbc.co.uk or similar respected websites and search directly.
Alternatively, we may wish to read about the effects of past imperialism upon countries which have escaped the yoke of empire, but which are still suffering the consequences of that imperialism. There are many scholarly articles available about the effects, still felt today, of imperialism in Africa. Here is one: https://www.researchgate.net/publication/273577309_THE_POLITICAL_AND_ECONOMIC_LEGACY_OF_COLONIALISM_IN_THE_POST-INDEPENDENCE_AFRICAN_STATES
An excellent way to find good quality, well-sourced articles on subjects of this sort is to use http://scholar.google.com. This searches through a database of academic articles, which can be ordered according to date. A search for "the effects of imperialism today" on this site helps to illustrate the many forms modern imperialism can take. We often think about the effects of imperialism on a conquered country, but scholarly articles have also been written about the effects of modern imperialism upon those soldiers who have been part of that imperialism, such as this one: http://journals.sagepub.com/doi/abs/10.1177/1478210316637971
We also find many articles about the new imperialism of "globalized monopoly finance," such as this one: https://search.proquest.com/openview/7ea2cc9ff49046870123a7c71b3466aa/1?pq-origsite=gscholar&cbl=48155
I hope that one or several of these articles will be useful to you.