To make it for record/reference, It's somewhat related to unlicensed fonts
In the following Q the OP linked a pdf document(All rights reserved by Author, but freely available via university handle) and asked how the graphs in thesis are made in page 23 etc...
Including the external images (atleast some examples) would be the first reaction to make by any editor since the OP is first time user(1 rep) and got severe downvotes due to his language and third person conversation involved. Basically I have tried my best to recover the newbie's Q to be more readable and clear. Finally I have removed the figures as per @JosephWright suggestion for a benefit of doubt.
Should we worry about copyright(sometimes unknown to us) of images while including external images ?
Case 1: Copyright is known to us(but document is freely available over university dissertation website) similar to the first time OP's Q linked here
As freely available over university dissertation website to benefit students/readers, Is it OK to copy and include 1 or 2 figures for eg: to demo purpose only without claiming any commercial/academic benefit ?
Case2: Copyright is unknown to us(since part of copyrighted document attached in link by OP)
As copyright is unknown to us(since part of copyrighted document attached in link by OP), Is it ok to copy and include 1 or 2 figures for eg: to demo purpose only without claiming any commercial/academic benefit ?
Case3: Any one who have experienced can add here
Based on this we shall include some good pointers to help editors in below metaQ