Re:Dozens of immigrants ... coerced into giving up visas and...
by dragonwriter on Friday February 03, 2017 @02:13PM
(#13562356)
Bracketed ellipses are often used in quoted material to mark elisions to make clear that the ellipses are inserted by the party relaying the quote to mark a elision, not ellipses present in the original text.
Most (maybe even all) formal sources that I've encountered use this style, not unbracketed ellipses.
If replacing a word with another word to convey missing contextual meaning- e.g., "I won't do business with [Mr. Trump] in the future," that's when you pull out the brackets.