plagiarism?
If you are posting plagiarized or copied content, you can get in legal trouble for violating copyright laws. Plagiarized posts and spam are seen as abuse and will be downvoted by community members. If you are posting or using someone else’s content, you must ensure that you have the rights to use the content, and properly reference the sources where you got the material from.

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Is it okay to use random pictures from the internet?
If you are using an image that is not your own, make sure you are allowed to use the image, and cite the source of the image.

Using random pictures from the internet without giving credit is discouraged. You may, however, use photos from “free image” websites such as Pexels.com or Pixabay.com. All photos on Pexels and Pixabay are free for personal and commercial use.

Here is a post from Hive account@mindover that has links to many websites that have images you can use: https://steemit.com/steem-help/@mindover/don-t-plagiarize-images-here-are-13-free-and-legal-ways-to-find-high-quality-photos-you-can-use-on-steemit