Clandestino or Rifugiato? Anti-immigration Facebook Ad Targeting in Italy

要旨

Monitoring advertising around controversial issues is an important step in ensuring accountability and transparency of political processes. To that end, we use the Facebook Ads Library to collect 2312 migration-related advertising campaigns in Italy over one year. Our pro- and anti-immigration classifier (F1=0.85) reveals a partisan divide among the major Italian political parties, with anti-immigration ads accounting for nearly 15M impressions. Although composing 47.6% of all migration-related ads, anti-immigration ones receive 65.2% of impressions. We estimate that about two thirds of all captured campaigns use some kind of demographic targeting by location, gender, or age. We find sharp divides by age and gender: for instance, anti-immigration ads from major parties are 17% more likely to be seen by a male user than a female. Unlike pro-migration parties, we find that anti-immigration ones reach a similar demographic to their own voters. However their audience change with topic: an ad from anti-immigration parties is 24% more likely to be seen by a male user when the ad speaks about migration, than if it does not. Furthermore, the viewership of such campaigns tends to follow the volume of mainstream news around immigration, supporting the theory that political advertisers try to ``ride the wave'' of current news. We conclude with policy implications for political communication: since the Facebook Ads Library does not allow to distinguish between advertisers intentions and algorithmic targeting, we argue that more details should be shared by platforms regarding the targeting configuration of socio-political campaigns.

受賞
Best Paper
著者
Arthur Capozzi
ISI Foundation, Turin, Italy
Gianmarco De Francisci Morales
ISI Foundation, Turin, Italy
Yelena Mejova
ISI Foundation, Turin, Italy
Corrado Monti
ISI Foundation, Turin, Italy
André Panisson
ISI Foundation, Torino, Italy
Daniela Paolotti
ISI Foundation, Torino, Italy
DOI

10.1145/3411764.3445082

論文URL

https://doi.org/10.1145/3411764.3445082

動画

会議: CHI 2021

The ACM CHI Conference on Human Factors in Computing Systems (https://chi2021.acm.org/)

セッション: Trust, Transparency & Sharing Online

[B] Paper Room 07, 2021-05-14 01:00:00~2021-05-14 03:00:00 / [C] Paper Room 07, 2021-05-14 09:00:00~2021-05-14 11:00:00 / [A] Paper Room 07, 2021-05-13 17:00:00~2021-05-13 19:00:00
Paper Room 07
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2021-05-14 01:00:00
2021-05-14 03:00:00
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