It means not clearly visible or attracting attention; not conspicuous
No, he hasn't done anything wrong, he conquered the entire Gallia and he reported the peace at Rome after the civil war. His adopted son Brutus and the other men killed him because they were worried that all the power would be concentrated on his person and they were also worried about the future of the Republic in this case.
When Caesar saw Brutus he said "Tu quoque, Brute, fili mi!"
Right.. don’t click on them, cause some people send those links for your ips