Columbia subject headings:
Internet videos--Political aspects--Congresses.
Internet--Political aspects--Congresses.
Mass media and propaganda--Congresses.
Social media--Political aspects--Congresses.
Visual communication--Political aspects--Congresses.
Harvard subject headings:
Internet videos--Political aspects--Congresses.
Internet--Political aspects--Congresses.
Mass media and propaganda--Congresses.
Social media--Political aspects--Congresses.
Visual communication--Political aspects--Congresses.
Princeton subject headings: